The graphic would have a similar plot of a 1.0-g sample of compound 2 appear because compound 2 has a higher molecular weight than compound 1.
The ideal gas law, also called the general gas equation, is the equation of the state of a hypothetical ideal gas.
The ideal gas law is written in an empirical form:
PV = nRT -> V = nRT/P -> V = (nR/P) x T
Pressure is constant, so it is only dependent on moles.
since compound 2 has a greater mass, it will also have a smaller number of moles, which means the slope will be smaller and located below the compound.
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choose the one best response for why you discard clean broken glassware, melting point capillaries, pipets or glass test tubes in the broken glass box and not in the regular trash can.
If the shattered glassware is not noticed, there could be potential injury to the janitorial crew. So, clean broken glassware, melting point capillaries, pipets or glass test tubes should always be discarded in the broken glass box. So, option C is correct.
This lab safety advice aims to prevent and/or reduce accidents from broken glass when handling lab glassware.
It is acceptable to collect broken glass that is not contaminated with chemicals, infectious elements, or other dangerous items in certified broken glass bins or 5-gallon buckets with covers.
To reduce the chance of getting hurt, always pick up shattered glass with a brush and dustpan, tongs, or forceps and put it into a receptacle meant for throwing away broken glass. Broken glass must never be handled with care and must never be disposed of in regular trash. There are numerous vendors who sell glass disposal boxes. These containers include a plastic liner for disposing of wet glasses and a lid with a built-in cardboard flap to close the container when it is full.
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The complete question is:
Choose the one best response for why you discard clean broken glassware, melting point capillaries, pipets or glass test tubes in the broken glass box and not in the regular trash can.
a) Glassware could still have chemical residues that need to be properly disposed of.
b) If shattered glass is thrown away with regular trash, the stockroom cannot charge for it.
c) If the shattered glassware is not noticed, there could be potential injury to the janitorial crew.
d) Glasses could still contain chemical traces that need to be properly disposed of.
on the website, the contributors all agreed that the average molecular kinetic energy is the same for both he and sf6. which of the following changes would best correct the distribution curve for sf6?
A change in the distribution curve for SF₆ will be observed and the curve will depict a much slower average speed and the shift on the curve will be to the left.
The Maxwell-Boltzmann equation tells about the kinetic theory of gases. It basically defines the distribution of the speeds for a gas at a particular temperature. From this distribution, we can derive the the average speed, most probable speed, and the root-mean-square speed.
The distribution depends mainly on two factors which are the mass and the temperature. Among He and SF₆, SF₆ has a higher mass and shows a shift on the curve. It shows a much slower average speed and the shift on the curve is observed to be towards the left.
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Question 12 of 25
Most scientists use scientific methods in which of the following orders?
Answer:
Observation and description of a phenomenon or group of phenomena
Formulation of a hypothesis to explain the phenomena
Use of experimentation and/or other forms of data collection to test the hypothesis
Analysis and interpretation of the data collected
Development of a theory or revision of the hypothesis based on the evidence
Repeat the experiment to ensure the results are consistent
Communicate the results to other scientists to have them verify the results.
Explanation:
Which of these is an example of a chemical property?
A. A banana will oxidize quickly in a paper bag.
B. Sodium has a boiling point of 97.79⁰ Celsius.
C. Water has a melting point of 0° Celsius.
D. Titanium has the same density at 3g as it does at 5g.
Answer:
A. A banana will oxidize quickly in a paper bag.
your european friends tell you they are pleased because their new car gives them 15 kilometers per liter of fuel. translate this into miles per gallon so you can decide whether to be impressed. use the conversion factors that one mile is 1.6 km and one gallon is 3.8 liters.
The conversion of 15 kilometers per liter of fuel into miles per gallon is 35.6 miles/ gallon.
Given that :
1 miles = 1.6 km
1 gallon = 3.8 liters
The conversion of 15 kilometers per liter to miles per gallon given as follows:
(15 kilometers / liter) × ( 1 liter / 1.6 gallon)
= (9.375 kilometers / gallon) × ( 3.8 kilometers / 1 mile )
= 35.625 miles / gallon
Thus, the conversion of kilometer in miles is 35.6 miles/ gallon , if Europeans friends tell you that they are pleased because the new car gives them 15 kilometers per liter of fuel.
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Sharla finds a container labeled tungsten. She removes the metal and weighs it and determines the mass is 377.64 grams of tungsten. How many moles of tungsten did she find?
The number of moles in 377.64 grams of tungsten is 2.005 moles.
How to calculate number of moles?The number of moles in a substance can be calculated by dividing the mass of the substance by its molar mass as follows:
no of moles = mass ÷ molar mass
According to this question, Sharla finds a container labeled tungsten. She removes the metal and weighs it and determines the mass is 377.64 grams of tungsten.
Molar mass of tungsten = 183.84g/mol
moles = 377.64g ÷ 183.84g/mol
moles = 2.005 moles
Therefore, 2.005 moles is the number of moles in 377.64g of tungsten.
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A force of 90n is applied to each cart below which one will accelerate the fastest
The cart with the fastest acceleration is 5 kg cart because its mass is the smallest.
What is mass?Mass can be experimentally defined as a measure of the body's inertia, meaning the resistance to acceleration when a net force is applied.
The parameters given include;
applied force, F_ = 90 N
mass of cart: 5kg, 6kg, 8 kg, 9 kg
According to Newton's second law of motion, the force applied to an object is directly proportional to the product of mass and acceleration of the object.
F_ = ma
The acceleration of the 5 kg cart is calculated as follows;
a = f_ /mass
a = 90/5
a= 18m/s²
The acceleration of the 6 kg cart is 15 m/s² (using Newton's second law)
The acceleration of the 8 kg cart is 11/25 m/s² (using Newton's second law)
The acceleration of the 9 kg cart is 10m/s² (using Newton's second law)
Therefore, the cart with the fastest acceleration is 5 kg cart because its mass is the smallest.
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Complete question:
A force of 90N is applied to each cart below, which one will accelerate the fastest?
Mass: 5 kg
Mass: 6 kg
mass: 8 kg
Mass: 9 kg
predict products and balance H2SO3 (aq) + KOH (aq)
Potassium sulfite and water are produced in the reaction between sulfuric acid and potassium hydroxide.
What two h2so3 Koh products result from the reaction?
Potassium hydroxide is a substance that is extremely caustic but incombustible. It is widely used in the production of cleaning products, chemicals, and petroleum refinery. Metals and tissue are both corroded by H2SO3. It has a strong burning sulfuric odor and is a clear liquid.
The net ionic equation, the type of reaction, the product of the reaction between H2SO3 and KOH, and other related topics will all be covered in this article.
H2SO3 + KOH has the following net ionic equation:
OH- = K+ O2 SO32
Follow the procedures listed below to get this net ionic equation:
H2SO3, K2SO3, and KOH, which should be ionized, are strong electrolytes in this reaction.
2K+ + OH- + 2H+ SO32 = 2K+ 2SO32 2H+ 2OH
The net ionic equation should be written down after the spectator ions on both sides have been removed.
Following the cancellation of the spectator ions, the net ionic equation is: OH- = K+ + O2- + SO32-.
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Move to the safety shower if you spill hazardous chemicals on your ________Stand under the shower and _________ the lever. Remove clothing and continue flushing the area for _________
Move to the safety shower if you spill hazardous chemicals on your skin. Stand under the shower and pull the lever. Remove clothing and continue flushing the area for at least 20 minutes.
If you get hazardous chemicals on your skin, you should go to the nearest safety shower right away.
In the event of a spill, the safety shower is a device that is specifically designed to flush chemicals from the skin and clothing.
When you reach the safety shower, stand beneath it and pull the lever to turn on the water flow.
It is critical to remove any contaminated clothing while showering to ensure that all of the chemicals are washed away.
Flush the affected area for at least 20 minutes to ensure that all chemicals have been removed. It is critical to follow these procedures to reduce the risk of injury or chemical exposure.
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the nadh generated during glycolysis and the citric acid cycle feeds its high-energy electrons to which of the following?
The NADH generated during glycolysis and the citric acid cycle feeds its high-energy electrons to the electron transport chain (ETC) also known as the oxidative phosphorylation.
The ETC is a series of protein complexes and electron carriers that transfer electrons from NADH and FADH2 to oxygen, creating a flow of electrons through the chain. During glycolysis, the glucose molecule is broken down into two molecules of pyruvate, generating two molecules of NADH in the process. In the citric acid cycle, also known as the Krebs cycle, the pyruvate molecules are further metabolized, generating additional NADH and FADH2 molecules. The NADH and FADH2 molecules are high-energy electron carriers because they have a surplus of electrons. These high-energy electrons are then transferred to the electron transport chain.
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The compound below exhibits one lone pair. Identify the type of atomic orbital that the lone pair occupies. O ap orbital O an sp3 hybridized atomic orbitalO an sp hybridized atomic orbital O an s orbital O an sp2 hybridized atomic orbital
The type of atomic orbital that the lone pair occupies is an sp² hybridization atomic orbital.
When two atomic orbitals join to generate a hybrid orbital in a molecule, the energy of the individual atoms' orbitals is redistributed to give orbitals of equivalent energy. We refer to this process as hybridization. The atomic orbitals with equivalent energies are mixed together during the hybridization process, which primarily involves the fusion of two s orbitals, two p orbitals, or the mixing of a s orbital with a p orbital or a d orbital. Hybrid orbitals are the new orbitals that are created in this way. More importantly, hybrid orbitals are very helpful in describing the characteristics of atomic bonds and molecular geometry.
sp hybridization
One s and one p orbital in the same main shell of an atom combine to generate two new equivalent orbitals, which is known as sp hybridization. The newly created orbitals are known as sp hybridised orbitals.
It produces 180° angled linear molecules.To create a new hybrid orbital known as a sp hybridised orbital, one's' orbital and one 'p' orbital of equal energy are mixed together in this sort of hybridization.Diagonal hybridization is another name for sp hybridization.Half of each sp hybridised orbital is made up of s and half of it is made up of p.sp² hybridization
Trigonal hybridization is another name for sp2 hybridization.To create the new hybrid orbital known as sp2, one's' orbital and two 'p' orbitals of equal energy are mixed together.Trigonal symmetry was used to generate a mixture of s and p orbitals, which are kept at 1200.The three hybrid orbitals remain in the same plane and are perpendicular to one another by 120 degrees. Each hybrid orbital produced has an's' character of 33.33% and a 'p' character of 66.66%.The triangular planar molecules have a centre atom that is linked to three other atoms and is sp2 hybridised.sp³ hybridization
These form an angle of 109°28' with one another and are pointed at the four corners of a conventional tetrahedron.The sp3 hybrid orbitals are at an angle of 109.280 degrees.25% s character and 75% p character make up each sp3 hybrid orbital.
Ethane (C2H6) and methane are two examples of sp3 hybridization.Learn more about hybridization here :
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The atmosphere can be compared to a
In an ecosystem , the atmosphere compares to a global blanket surrounding it.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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Which of the following are correct statements regarding applications of the gas laws and kinetic-molecular theory to the Earth's atmosphere? Select all that apply.A. The gases in the atmosphere behave nearly ideally, so that volume percent equals mole percent.B. The pressure of the atmosphere increases as altitude decreases, and Avogadro's law states that gases are compressible as pressure increases.C. Charles's law helps explain air convection patterns in the lower atmosphere.D. Because of the low density of particles in the thermosphere, the transfer of kinetic energy is very slow and temperatures are very low.
The correct statements viewing applications of the gas laws and kinetic-molecular theory to the Earth's atmosphere are the gases in the atmosphere behave nearly ideally, so that volume percent equals mole percent and Charles's law aids explain air convection patterns in the lower atmosphere.
The gas laws are a bunch of laws that govern the behavior of gases by fitting out associations between the following: the volume inhabited by a gas, the pressure put forth by a gas on the partitions of its container, the absolute temperature of the gas, and the quantity of gaseous substance (or) the number of moles of gas. The five gas laws are Boyle's Law, Charles's Law, Gay-Lussac's Law, Avogadro's Law, and The Combined Gas Law (or the Ideal Gas Law). Under standard situations, all gases exhibit analogous behavior.
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the potential danger involved with ingesting certain compounds is associated with their solubility in the body's aqueous environment. which of the following would be most soluble in water?
A. It is advisable to base answers to questions on the physical characteristics of organic compounds on general chemistry concepts, particularly those pertaining to bonds polarity and molecular interactions.
It's vital to keep in mind that "likes dissolve likes" while discussing solubility. We are therefore seeking a molecule that most closely resembles the polar makeup of water. The greatest intermolecular force in which water molecules engage is hydrogen bonding; hence, the most soluble molecule should be comparable. Alcohols can also engage in hydrogen bonding, although this capacity declines as the alkyl component of the alcohol molecule grows larger because the hydrogen bonding network is disrupted by the more nonpolar alkyl group. Since ethanol (option (A)) has a smaller alkyl group than propanol (option (B)), it is more capable of forming hydrogen bonds and will thus be more soluble in water.The molecules in choices (C) and (D), a ketone and an ether, respectively, are less soluble in water because, although having polar carbon-oxygen bonds, they lack hydrogen atoms bound to electronegative (FON) atoms, which are necessary for hydrogen bonding. Answer option (A) is the right selection.
(B) Deformation The carbon chain of this molecule is one carbon longer than that of ethanol, despite the fact that the OH group may make hydrogen bonds. As a result, it is less soluble in water.
(C) Deformation Although ketones are capable of forming hydrogen bonds, they lack a dipole moment.
D) distortion Ethers are somewhat polar, but since they cannot form hydrogen bonds, they are not very water-soluble.
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The complete question is:
The potential danger involved with ingesting certain compounds is associated with their solubility in the body's aqueous environment. Which of the following would be most soluble in water?
A.CH3CH2OH
B. CH3CH2CH2OH
C. CH3OCH2CH3
given this information, what structure is most likely part of a larger molecule responsible for increasing the rate of the glycolytic pathway in eukaryotes?
Enzymes like hexokinase and phosphofructokinase catalyze the conversion of glucose to pyruvate in the glycolytic pathway, which speeds up the metabolism.
What are eukaryotes?Eukaryotes are a class of organisms that have membrane-bound organelles and a genuine nucleus. All multicellular species, including animals, plants, and fungi, as well as some single-celled organisms, such as protozoa and algae, are included in this category.
It is likely that the structure, which is most likely a component of a bigger molecule, is what speeds up the glycolytic pathway in eukaryotes. Enzymes are biological catalysts that speed up chemical reactions by lowering the energy needed for the process to start. Enzymes like hexokinase and phosphofructokinase catalyze the conversion of glucose to pyruvate in the glycolytic pathway, which speeds up the metabolism.
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Give the IUPAC name for this compound pleaseee
The IUPAC name for the compound given in the diagram above is 2,4-dimethylhexane
How do I determine the IUPAC name for the compound?The IUPAC naming of organic compounds follows certain defined principles. These principles includes:
Locate the longest continuous carbon chain. This inturn gives the parent name of the compound.Identify the substituent groups attached to the compound.Give the substituents groups the lowest count by considering their location.Combine the above to generate the name of the compound.Now, let us determine the IUPAC name for the compound using the above principle.
The longest continuous carbon chain is 6. Thus, the parent name is hexaneThe substituent group attached is methylThere are two methyl groups. one is located at carbon 2, and the other at carbon 4Thus, the IUPAC name for the compound is:
2,4-dimethylhexane
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How many grams of O2 will be formed from 28.9 moles of KCiO3
Answer:
28.9 moles of KClO3 x (3 moles O2 / 2 moles KClO3) = 43.35 moles of O2
To convert moles to grams, you'll need to use the molar mass of O2, which is 32 g/mol.
43.35 moles x 32 g/mol = 1387.2 g of O2
So from 28.9 moles of KCiO3 , 1387.2 grams of O2 will be formed.
rank the following compounds in order of decreasing boiling point: potassium bromide ( kbr k b r ), acetylene ( c2h2 c 2 h 2 ), and iodomethane ( ch3i c h 3 i )
1. Potassium bromide (KBr)
2. Iodomethane (CH3I)
3. Acetylene (C2H2)
The boiling point of a compound is determined by the strength of the intermolecular forces between its molecules. Potassium bromide has the strongest intermolecular forces, as it is an ionic compound composed of positively charged potassium ions and negatively charged bromide ions. These ions are held together by electrostatic forces, which are stronger than the other types of intermolecular forces.
Iodomethane has a higher boiling point than acetylene because it has a polar covalent bond and can form dipole-dipole interactions between its molecules. Acetylene, on the other hand, is a nonpolar compound and only experiences London dispersion forces between its molecules. These forces are weaker than the dipole-dipole interactions in iodomethane.
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Convert 320 mmHg to kPa
Answer: 42 2/3 kPa
Explanation: To get the approximate answer, divide by 7.5
320/7.5 = 42.66666... = 42 6/9 = 42 2/3 kPa
• Your patient receives Lanoxin 0.075 mg PO daily for cardiac arrhythmia. Available is Lanoxin elixir 50. mcg/mL. How many È mLs will you administer with each dose?
Your patient receives Lanoxin 0.075 mg PO daily for cardiac arrhythmia. Available is Lanoxin elixir 50. mcg/mL. 1.5mls administer with each dose.
What is cardiac arrhythmia ?An arrhythmia of the heart is an irregular heartbeat. When the electrical signals that coordinate the heart's beats fail to function properly, heart rhythm problems occur. Because of the faulty signaling, the heart beats too quickly,too slowly , or irregularly.
Patient receives lanoxin 0.075mg .
Available is 50mcg/ml.
0.075mg = 75mcg
Availanle = 50mcg/ml
50mcg = 1ml
1mcg = 1 ÷ 50ml
75 mcg = 1 ÷ 50 × 75ml
= 1.5ml
Patient receives 1.5mls with each dose.
Thus, Your patient receives Lanoxin 0.075 mg PO daily for cardiac arrhythmia. Available is Lanoxin elixir 50. mcg/mL. 1.5mls administer with each dose.
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The pressure gauge on a compressed air tank reads 43.2 mmHg. What is the pressure in atm? atm
80 points
The pressure gauge on a compressed air tank reads 43.2 mmHg. 2.94 atmosphere is the pressure.
What is pressure ?The term pressure is defined as the amount of force exerted per area.
Pressure in compressed air tank reads 43.2 pounds per square inch (lb/in),
Then, convert pressure to atmosphere (atm)
Recall that 1 atm = 14.695964 lb/in
Thus, let Z = 43.2 lb/in
To get the value of Z, cross multiply
43.2 lb/in x 1 atm = 14.695964 lb/in x Z
43.2 lb/in atm = 14.695964 lb/in x Z
Z = 43.2 lb/in atm / 14.695964 lb/in
Z = 2.94 atm
Thus, the pressure of the compressed air tank reads 2.94 atmosphere.
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complete combustion of a 1.05 gram sample of the compound witht he soichiometric amound of oxygen gas
The pressure of the gas mixture when it is contained in a 3.00 liter flask at 127˚C is 0.926 atm.
To calculate the pressure of the gas mixture produced by the combustion of the compound, we can use the ideal gas law PV = nRT.
Given:
P : ?V : 3.00 Ln : moles of gas producedR : 0.08206 L atm K-1 mole-1T : 127 + 273 = 400KWe can calculate the moles of gas produced by the combustion reaction by using the balanced equation for the combustion of the compound with oxygen.
CxHy + (x+y/4) O2 → x CO2 + (y/2) H2OGiven that 1 mole of CO2 and 2 moles of H2O is produced.
Moles of CO2 produced = 1.05 / 44.01 = 0.024 moleMoles of H2O produced = 0.048 moleTotal moles of gas produced = 0.024 + 0.048 = 0.072 moles
Plugging in the values we get:
P = (n * R * T) / V P = (0.072 * 0.08206 * 400) / 3.00 P = 0.926 atmSo, the pressure of the gas mixture when it is contained in a 3.00 liter flask at 127˚C is 0.926 atm.
This question is incomplete and should be provided as:
Complete combustion of a 1.05 gram sample of the compound with the stoichiometric amount of oxygen gas produces a mixture of H2O(g) and CO2(g). What is the pressure of this gas mixture when it is contained in a 3.00 liter flask at 127˚C?Learn more about combustion reaction here: brainly.com/question/13251946
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How to calculate and express my answer in one decimal place
The temperature of the object as it is given in the other unit is 105.1 °F.
What is temperature?Temperature is a measure of the amount of thermal energy or heat in a system.
Now we know that to convert from the Celsius to the Fahrenheit temperature that we have to be able to use the formula;
(T°C × 9/5) + 32 = T°F
Then we have that;
T°C = 40.6
Thus we now have that;
(40.6 × 9/5) + 32 =
= 105.1 °F
Thus the object that we have in the farm is going to have a new temperature that we obtain as 105.1 °F
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Zahara Noor wants to create a presentation of different molecules that helped change the world, but she needs help in naming them, so that anyone is able to understand the molecules that she is talking about. Provide the name of the molecule described here:NaCl: Used in cooking and purification purposes.
Answer:
NaCl = sodium chloride
Explanation:
Sodium chloride (NaCl) - used in cooking and water purification for its flavor enhancement and cleansing properties.
The molecule described here is sodium chloride, commonly known as table salt. NaCl is a compound composed of one sodium (Na) atom and one chlorine (Cl) atom bonded together by an ionic bond. It is widely used in cooking to enhance the flavor of various dishes. Salt is also an essential part of our diet as it contains sodium, which is necessary for various bodily functions.
Additionally, sodium chloride is widely used for purification purposes. It is commonly used in water treatment plants to purify water for consumption. The process of adding salt to water helps to remove impurities and contaminants, making it safer to drink. Furthermore, NaCl is used as a preservative for food products to extend their shelf life.
Overall, sodium chloride plays a crucial role in various aspects of our daily lives, including culinary applications and water purification, making it a molecule that has changed the world in many positive ways.
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an air bubble of 5 cm3 volume is at the bottom of a lake 35 m deep, where the temperature is 4oc. the bubble rises to the surface, which is at a temperature of 20oc. take the temperature of the bubble to be the same as that of the surrounding water and find its volume just before it reaches the surface. you can treat the air in the bubble as an ideal gas.
The bubble's volume right before it reaches the surface is 23.6 cm³, and let's assume that its temperature is the same as the surrounding water's. You can think of the bubble's air as an ideal gas.
n=p₁V₁/RT₁=(p₀+ρgd)V₁/RT₁
p₁/RT₁=p₂V₂/RT₂
∴V₂=p₁V₁T₂/p₂T₁=(p₀+ρgh)V₁T₂/p₀T₁
= (1.01×10⁵+10³×10×35)(5)(273+20)/1.01×10⁵(273+4)
=23.6 cm³
A theoretical gas called an ideal gas is one that has lots of point particles flying around arbitrarily and not being affected by other particles. The ideal gas notion is advantageous because it complies with the ideal gas law, a condensed equation of state, and is amenable to statistical mechanics analysis. It is frequently possible to loosen the need for zero interaction, for instance, if the interaction is totally elastic or is thought of as point-like collisions.
Many real gases behave qualitatively like an ideal gas, where the gas molecules (or atoms for monatomic gases) take on the function of the ideal particles, under varied conditions of temperature and pressure. Numerous gases, including air mixes and heavier gases including carbon dioxide, nitrogen, oxygen, and hydrogen.
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which of the following substituents are meta directors? select all that apply. group of answer choices co2et h nh2 no2 oh cl ch3 cf3
The substituents that are meta directors are NO₂, Cl and CF₃.
In electrophilic substitution reactions in aromatic compounds, the position of the substituent on the ring can affect the rate and outcome of the reaction. Substituents can be classified as ortho, meta, or para directors, depending on their ability to direct the electrophile to specific positions on the ring. Substituents that are meta directors, like NO₂, Cl, and CF₃, have a moderate effect on directing electrophiles to the meta position (the position adjacent to the substituent) on the ring. They have a weaker effect than ortho-para directors but stronger than ortho directors.
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Which particle will complete this reaction
The particle that will complete this reaction is an isotope of zinc with 30 protons and 64 neutrons.
What is an isotope?Isotopes are described as two or more types of atoms that have the same atomic number and position in the periodic table, and that differ in nucleon numbers due to different numbers of neutrons in their nuclei.
There are two main types of isotopes and they include:
stable isotopes and unstable (radioactive) isotopes.In conclusion, there are 254 known stable isotopes.
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The percent of O in Li3PO4 is___% O. (Round to 2 decimal places).
PLEASE HELP
The mass percent of oxygen in the compound lithium phosphate Li₃PO₄ is its ratio of mass to the total mass i.e., 56 %.
What is mass percent ?Mass percent is a common term used to express the composition and concentration of a compound. The mass percent of an element in a compound is the ratio of its mass in that compound to the total mass of the compound multiplied by 100.
The molar mass of the compound Li₃PO₄ = 113 g
(P = 31 g/mol, Li= 6 g/mol, O= 16 g/mol .)
Atomic mass of O = 16 g/mol
mass of 4 oxygen = 64 g.
Mass percent of O in the compound = mass of 4 O/total mass
mass % = 64 g/113 g × 100 = 56%.
Therefore, the mass percent of oxygen in the compound is 56%.
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directions: each of the following questions or incomplete statements is accompanied by five suggested answers or completions. select the one that best answers the question or completes the statement.
A: The biodiversity of the pond has decreased.
B: The species richness
What is BiodiversityBiodiversity is all life on this earth including plants, animals, fungi and microorganisms as well as the various genetic materials they contain and the diversity of the ecological systems in which they live. This includes the relative abundance and genetic diversity of organisms from all habitats, whether on land, sea or other aquatic systems.
Biodiversity can be classified into three levels:
a. Species diversity
Species or types have the meaning, individuals who have morphological, anatomical, physiological similarities and are able to interbreed with each other (inter-hybridization) which produce fertile offspring to continue their generation.
Another example is the diversity of species in coconut trees, palm trees, areca palm trees and also in palm trees.
b. Genetic diversity
Gene diversity is the diversity of individuals within one type of living thing. Gene diversity results in variations between individuals of the same kind. Examples of diversity at this gene level are white roses, red roses, and yellow roses which have differences, namely different in terms of flower color.
c. Ecosystem diversity
Ecosystem can be interpreted as a relationship or mutual interaction between one living thing and another living thing and also between living things and their environment. Every living thing will only grow and develop in a suitable environment.
Your question is incomplete but most probably your full question was:
Directions: Each of the questions or incomplete statements below is followed by five suggested answers or completions. Select the one that is best in each case.
A) A one-hectare pond is sampled in early September. The sample yields 1 small catfish as well as 17 benthic invertebrates that represent 10 species. If the pond is resampled a year later, which of the following would best indicate that the pond had been adversely affected by adjacent development?
B) A one-hectare pond is sampled in early September. The sample yields 1 small catfish as well as 17 benthic invertebrates that represent 10 species. Which of the following can be estimated from the sample for the invertebrates in the pond?
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if the flask is open to the atmosphere, the mercury levels are equal. for each of the following situations where a gas is contained in the flask, calculate the pressure in the flask in torr, atmospheres, and pascals.
The pressure in the flask in torr is 642 torr, the pressure in atmosphere is 0.845 atm and the pressure on pascals is 8.56 × 10⁴ pa.
Given that :
Atmospheric pressure = 760 mmHg
The difference in h = 118 mm
The pressure in the tank = 760 mmHg - 118 mmHg
The pressure in the tank = 642 mmHg
The pressure in torr = 642 mmHg ( 760 torr / 760 mmHg )
= 642 torr
The pressure in atmosphere = 642 mmHg ( 1 atm / 760 mmHg)
= 0.845 atm
The pressure in pascals = 642 mmHg ( 101325 pa / 760 mmHg )
The pressure in pascals = 8.56 × 10⁴ pa.
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