Answers
Answer:
0.0660 moles
Explanation:
Change torr to atm and change celcius to kelvin.
(1.35L)(.987 atm)/(0.08206 L atm /mol k)(290k)
= 0.0660 mol
Related Questions
2. Describe two ways in which you could decide when an
acid has been completely neutralised by an insoluble
carbonate.
Answers
Answer:
search in chrome u will get your answer
Explanation:
Is the chemical equation balanced or unbalanced?
H2 + O2 = H20
O BALANCED
O UNBALANCED
Answers
Answer: Is the chemical equation balanced or unbalanced?
Explanation: H2 + O2 = H20
O BALANCED
O UNBALANCED
I have the same problem
What will the volume of 254 cm3 of gas be at STP if its original temperature is 72.6° C?
Answers
Answer:
200.6cm³
Explanation:
Using Charles law equation as follows:
V1/T1 = V2/T2
Where;
V1 = initial volume (cm³)
V2 = final volume (cm³)
T1 = initial temperature (K)
T2 = final temperature (K)
According to the question;
initial volume (V1) = 254cm³
final volume (V2) = ?
Initial temperature (T1) = 72.6°C = 72.6 + 273 = 345.6K
Final temperature (T2) = 273K
V1/T1 = V2/T2
254/345.6 = V2/273
Cross multiply
345.6 × V2 = 273 × 254
345.6V2 = 69342
V2 = 69342 ÷ 345.6
V2 = 200.6cm³
true or false gasses can apply a force on an object
Answers
Answer:
True, gasses can apply a force on an object.
percent yield of 0.20 g of Al
Answers
Answer:
the dividend yield is 4%
Explanation:
The computation of the dividend yield is as follows:
Dividend yield = Dividend per share ÷ current share price per share
= ($0.20 × 4 quarters) ÷ $20
= $0.80 ÷ $0.20
= 4%
hence, the dividend yield is 4%
The same is determined by applying the above formula
Which statement is correct about the law of conservation of energy?
Energy is created when water freezes.
Energy is destroyed when sugar is burned.
Energy stays inside molecules permanently.
Energy is transferred when atoms are rearranged.
Answers
Answer:
Energy is transferred when atoms are rearranged
Explanation:
Breaking bonds between atoms need energy. When new bonds are formed, energy is released
The law of conservation of energy is energy isn't created or destroyed
A and B are wrong because there is creation or destruction of energy
C is wrong because energy can be transferred (think touching a hot stove with your finger. heat is transferred from the stove to your finger OUCH!)
D is correct because the energy is still there, but in a different form
a) what is hydrogen's carrying capacity?
b) what is lithium’s carrying capacity?
Answers
Answer:
A)Hydrogen can be stored physically as either a gas or a liquid. Storage of hydrogen as a gas typically requires high-pressure tanks (350–700 bar [5,000–10,000 psi] tank pressure). Storage of hydrogen as a liquid requires cryogenic temperatures because the boiling point of hydrogen at one atmosphere pressure is −252.8°C.
B) carrying capacity of the lithium reserve will reach 10 million EV and 90 billion CE's RLBs for 50% recycling of lithium-containing waste, and 15 million EV and 150 billion CE's RLBs for 90% recycling.
Explanation:
Hope this helped Mark BRAINLEST!!
How does energy flow when a refrigerator door is accidentally left open? In other words, does the cold air from the fridge flow out or does the heat from the room flow inside the fridge?
Answers
Explanation:
Energy as heat flows from a body of higher temperature to a body of lower temperature.
In this question, inside the refrigerator represents the lower temperature. The room temperature represents the body of higher temperature.
Hence;
The heat would flow from inside room to inside the fridge.
A neutral atom contains eight protons, nine neutrons, and eight electrons. The atom must be
A. An oxygen isotope
B. a nitrogen isotope
C. a fluorine isotope
d. a neon isotope
Answers
(16m)(x)=(0.10)(1.5l)
Answers
Answer:
0.192 M NaOH
Explanation:
According to the Law of Conservation of Mass, how much water is produced if 22.5 g of
CHA react with 35.7g of Oz to form 48.9g of CO2?
CH4 + O2 + CO2 + H2O
o 107.1g
o 71.4g
o 62.1g
o 9.3g
8
9
10 11
12 13 14 15 16 17
Ne
Answers
Answer: The amount of water produced is 9.3 grams
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
[tex]CH_4+2O_2\rightarrow CO_2+2H_2O[/tex]
mass of reactants = mass of methane + mass of oxygen = 22.5 g + 35.7 g = 58.2 g
mass of products = mass of carbon dioxide + mass of water = 48.9 g + mass of water
48.9 g + mass of water = 58.2 g
mass of water = 9.3 g
What is the relationship between mole, Avogadro number and mass?
a.1mole=6.022 × 1023 atoms and molecules= g atomic/molecular mass
b. 1mole =6.022 × 1023 atoms and molecules /1 g atomic/molecular mass
c. 2mole=6.022 × 1023 atoms and molecules=1 g atomic/molecular mass
d. 1mole < 6.022 × 1023 atoms and molecules=1 g atomic/molecular mass
Answers
Answer:
The mass of one mole of a substance is equal to that substance's molecular weight. ... water is 18.015 atomic mass units (amu), so one mole of water weight 18.015 grams. ... Avogadro's number is a proportion that relates molar mass on an atomic ... one molecule of water (H2O), one mole of oxygen (6.022×1023 of O atoms)
Which example represents sexual reproduction?
A). lioness giving birth to cubs
B). amoeba dividing to form two amoebas
C). new plant developing from the leaf of an air plant
D). new plant growing from the stem of a strawberry plant
Answers
Answer:
D
Explanation:
lioness giving birthe is not the process
amoeba is asexual
its either c or d but most likely d
Answer:
the answer is (A) the lioness giving birth
Explanation:
sexual reproduction is when two parents of different orientation come together to have a baby. e.g. a male and female having a baby
Asexual is when you only need one parent so like with plants and stuff.
how does the compound NaOH contain ionic and covalent bonds?
Answers
Answer:
Explanation:
OH forms a covalent bond. However, OH itself is negatively charged. Therefore, it can form ionic attractions to the positively charged sodium (Na+) ions.
true or false I need help
Answers
Answer: True
Explanation:
Venus is the hottest planet in the solar system. Mercury is still hot but half of it is also cold due to the sun not directly pointing at it.
Answer:
true
Explanation:
Question 1
Balance the following chemical equation. __Li+___f2-->___LIF
Answers
Answer:
2Li + F2 → 2LiF
Explanation:
Hope this helps!
What is the IUPAC name for H2O?
Answers
Answer:
I guess it is.....
Oxidane.
Answer:
Technically, dihydrogen monoxide.
Explanation:
You see, the International Union of Pure and Applied Chemistry, also known as IUPAC, hasn't seen a need to define a structural name for water yet.
Following the naming conventions, it should most likely be called "dihydrogen monoxide", but IUPAC has never officially defined this as the chemical name for water.
what's the advantage and disadvantage of How does the number of "carbon" atoms in different alcohol affect the energy density of alcohol ( like Pentanol, butanol, propanol and methanol?
Answers
light behaves as a longitudinal wave
Answers
Answer:
No, light behaves as a Transverse Wave. All electromagnetic waves behave as transverse waves.
Green plants use light from the Sun to drive photosynthesis, a chemical reaction in which liquid water and carbon dioxide gas form aqueous glucose C6H12O6
and oxygen O2
gas. Calculate the moles of water needed to produce 1.00mol
of glucose. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.
Answers
Answer:
Explanation:
The photosynthetic equation is as follows:
6CO2 + 6H2O = C6H12O6 + 6O2
According to this equation, 6 moles of water (H2O) is required to produce 1 mole of glucose
PLZZZ HELP BRAINILEST (science)
Answers
Answer:
i cannot see the question due to the flash you used
Explanation:
Help me please I’ll give brainlest
Answers
Answer:
50%
50%
0%
Explanation:
um- punnett squares are weird lol
(20 points)
How to explain the decomposition reaction?
(The video name: chemical calculations | stoichiometric relationships )
Answers
Explanation:
Watch the video and figure it out by ur self
Ca(NO3)2 + HCl --> HNO3 + CaCl2
According to the reaction above, 55.0 grams of calcium nitrate react with excess hydrochloric acid to produce how many grams of caclium chloride?
Answers
This
Question please
Answers
Answer:
See detailed explanation.
Explanation:
Hello!
i. In this case, since the given chemical reaction is exothermic due to the negative change in the enthalpy of reaction, we infer that according to the mentioned principle, by lowering the temperature the reaction will shift rightwards and therefore the yield is increased; thus, you need a lower temperature than the specified.
ii. In this case, since the reaction has less moles at the products side, according to the mentioned principle it'd be necessary to rise the pressure in order to increase the yield, since the increase of pressure favors the reaction side with the fewest number of moles.
Best regards!
Two plants growing close to one another are competing for resources. Which resource are they NOT likely to compete for? Choices A-Water B-Soil and nutrients C- Carbon dixoide
Answers
Answer: the resource which they are not likely to compete for is CARBONDIOXIDE. The correct option is C.
Explanation:
Competition may be defined as the a negative effect on plant growth which occurs when there is reduction in the availability of resources.
During the growth of plants, there are several resources that affects it's growth and maintenance. These resources include:
--> soil nutrients,
--> water,
--> carbondioxide and
--> sunlight
Since plants are autotrophs, that is, they manufacture their own food through the use of inorganic raw materials such as water and carbondioxide in the presence of sunlight, there may exist some level of competition for these resources when there is lack of space.
But plants are NOT likely to compete for carbondioxide because the atmospheric pool of carbondioxide is large and well mixed, therefore it won't be affected by lack of space between the two plants. Unlike the other main resources such as soil nutrients and water which are highly competed for and can determine the distribution of plants in an ecosystem.
Plsss help this midterm ends 12.30
A piece of indium with a mass of 21.93 g is submerged in 46.3 cm3 of water in a graduated cylinder. The water level increases to 49.3 cm3. The correct value for the density of indium measured in g/cm3 from these data is:
Answers
Answer:
We know that,
Density= mass upon volume.
mass= 21.93g
Volume= 49.3 - 46.3
= 3 cm³
Density = 21.93÷ 3
= 7.31 g/cm³
Hope it helps :))
A piece of indium with a mass of 21.93 g is submerged in 46.3 cm³ of water in a graduated cylinder. The water level increases to 49.3 cm³. The correct value for the density of indium measured in g/cm3 from these data is 7.31 g/cm³.
What is density?The density of a material is defined as its mass per unit volume. Although the Roman letter D can also be used, the most common symbol for density becomes. Mathematically, density is calculated by dividing weight by volume.
Density is frequently loosely defined as weight per unit volume, which is technically wrong; this quantity is actually more accurately characterized as specific weight. One example is the oil and gas industry in the United States.
Density= mass/volume.
mass= 21.93g
Volume= 49.3 - 46.3
= 3 cm³
Density = 21.93÷ 3
= 7.31 g/cm³
Therefore, 7.31 g/cm³ is the density.
To learn more about density, here:
https://brainly.com/question/29775886
#SPJ6
If a balloon containing 1000 L of gas at 50°C and 101.0 kPa rises to an altitude where the pressure is 50.5 kPa and the temperature is 10.0°C, what will the volume of the balloon be under these new conditions?
a.) 0.17 L
b.) 172.5 L
c.) 1725.32 L
d.) 1752.32 L
Answers
Answer:b
Explanation:
4) How much of the world population lives in countries where there isn't enough water, or
the quality has been compromised?
Answers
Answer:
The answer is 1/3 of the population.
Which statement describes the reaction involved in cellular respiration?
A. Sugar is produced and stored until it is needed for energy.
B. CO2 is removed from the atmosphere, and O2 is released into the
atmosphere.
C. It is a redox reaction in which energy is released to ATP molecules.
D. O2 is removed from the atmosphere, and CO2 is released into the
atmosphere.
Answers
Answer:
C
Explanation:
Cellular respiration is the metabolic process and is a reduction-oxidation reaction that yields ATP molecules. Thus, option C is accurate.
What is cellular respiration?It is a redox reaction that utilizes glucose and oxygen molecules to release carbon dioxide and energy in the form of ATP. This energy released is used to drive the functions and roles of the cells.
The food molecule, glucose is broken in the presence of the oxygen molecule to release the carbon dioxide and the energy from the cells that are in the form of adenosine triphosphate molecule.
Therefore, option C. cellular respiration is a redox reaction is correct.
Learn more about cellular respiration here:
https://brainly.com/question/19508709
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