How does the vapor pressure of mercury affect the pressure reading of the manometer?
When the Florida summer brings hot temperatures, what seasonal changes can be seen in plants?
Pedro adds 3.23 moles of helium to a balloon that already contained 4.51 moles of helium creating a balloon with a volume of 9.87 liters. What was the volume of the balloon before the addition of the extra gas?
Answer:
7.The answer is 2.13 because if u add 3.23 and 4.51 and the answer is 7.74 and u add 2.13 to get 9.87. 3.23 + 4.51 + 2.13 is 9.87
Explanation:
What is the name of the molecule shown below?
O A. 2-octene
B. 3-octene
C. 3-octyne
O D. 2-octyne
Answer:
2-octene
Explanation:
A P E X
2-octyne is the name of the molecule given. Therefore, the correct option is D.
An organic substance having the chemical formula [tex]C_8H_1_4[/tex] is 2-octyne. It has a triple bond between the carbon atoms, which makes it an alkyne. The triple bond is located at the second carbon position in the octane chain, as indicated by the systematic IUPAC name of this molecule, 2-octane. 2-Octyne is an odorless, colorless liquid that is insoluble in water.
It can participate in various functional group transformations and undergo addition reactions. It can be used in organic synthesis as a building block for the construction of more complex compounds. It can also be used as a solvent or mediator in chemical processes.
Therefore, the correct option is D.
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A scuba diver is using scuba gear to breathe under water. The pressure on her lungs is 2.5 atm and her lung volume is 4.4 L. What will happen to the volume of her lungs when the pressure increases to 4.5 atm?
Answer:
2.44 LExplanation:
The volume can be used by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2 \\ [/tex]
where
P1 is the initial pressure
P2 is the final pressure
V1 is the initial volume
V2 is the final volume
Since we're finding the final volume
[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]
We have
[tex]V_2 = \frac{2.5 \times 4.4}{4.5} = \frac{11}{4.5} \\ = 2.444444....[/tex]
We have the final answer as
2.44 LHope this helps you
The data below compares two different cells, Cell A and Cell B.
Cell A
Cell B
1. Has a cell membrane
2. Is oval-shaped
3. Has a nucleus
1. Has a cell membrane
2. Is spindle-shaped
3. Has a nucleus
What can you conclude about both cells from the comparison?
a
Cell A is a prokaryotic and Cell B is a eukaryotic cell.
Both are eukaryotic cells.
Both are prokaryotic cells.
Cell A is a eukaryotic and Cell B is a prokaryotic cell.
Answer:
both are eukaryotic
Explanation:
both has nucleus so
what is potential energy? (person with the right answer will get 5 stars)
Answer:
The energy possessed by a body by the virtue of its position is called potential energy.
3. Density is influenced by changes in
A.Temperature and salinity
B.Wind
C.Upwelling
D.Ocean currents
Answer:
C upwelling
Explanation:
Because when temperature is influenced it could either be increased or decreased
Explain how natural resources are identified and why natural resources are unevenly distributed.
Please help me I will write this in my own words and you will be given 20 points ad brainlist also please don't put a super long answer just a small simple paragraph and don't give me a link..
Answer:
Natural resources are naturally formed of course(wood copper fruits) and they are not distributed evenly due to competition of getting them and the prices of the resources
Explanation:
A sample of 250 g of water are heated from 40°C to 121°C, calculate the amount of heat energy absorbed.
552,000 Joules
100,416 Joules
638, 555 Joules
73,885 Joules
Answer:
the anwser isn't in the choices
Explanation:
H=MC(change of temp.)
M=mass of water=250g
C=specific heat of water = 4.186 j/g
change in temperature is 121-40= 81
H= 250x4.186x81=84766.5J
what compound is YCI3
Answer:
Yttrium, Carbon, Iodine
Explanation:
Y stands for Yttrium
C stands for Carbon
I stands for Iodine
and 3 stands for 3 Iodine atoms
Copper(II) oxide reacts with carbon when heated.
2Cu + C → 2Cu + CO2
Which statement about this reaction is correct?
ACarbon is the oxidising agent.
B Carbon is the reducing agent.
C Copper(II) oxide is oxidised.
D Copper(II) oxide is the reducing agent.
Answer:
the fourth one or the first, but I wouldn't say I'm completely sure.
Explanation:
Answer:
B Carbon is the reducing agent
Explanation:
carbon is above copper in the reactivity series hence reducing copper (II) oxide to copper
Question 2
Use the balanced chemical reaction below to answer the question.
200 + O2 + 2CO2
What is the ratio of moles of oxygen used to moles of carbon dioxide
produced?
O 2 mol O2: 2 mol CO2
O 1 mol O2: 1 mol CO2
O 2 mol O2: 1 mol CO2
O 1 mol O2:2 mol CO2
when discussing Solutions the amount of solute dissolved in the solvent is important to know as it will affect the colligative properties of a solution a pure illusion prepared by dissolving the maximum amount of solute in a given amount of solvent is best described as
I hope it helps
thanks you
A substance conducts electricity because of free moving, charged particles.
what are the free moving charged particles in a :
carbon electrode(made of graphite)
molten mixture of aluminum oxide and cryolite
metal wire?
Answer:
carbon electrode: delocalised electrons
molten mixture....: aluminium oxide ions
metal wire: Metal atoms
The free moving charged particles in the following substances are as follows;
carbon electrode(made of graphite); Delocalized electrons.molten mixture of aluminum oxide and cryolite;. Aluminium ions in Aluminium oxide.Metal wire; Metal ionsGraphite, an allotrope of carbon has Delocalized (free-moving) electrons and these electrons serve to enable conductivity.
Although, cryolite is a bad conductor of electricity, when Molten Aluminium oxide and cryolite is used, the free moving Aluminium ions enable conductivity.
In metal wires, conductivity is solely the responsibility of metal ions.
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why should a sports person or a rickshaw puller in take more corbohydrate rich food in their diet
Answer:
Because carbohydrates are energy
Explanation:
Carbohydrates is best best nutrient for energy, turning into energy as soon as they are eaten. A rickshaw puller most likely needs quite a bit of energy to pedal all day without getting tired, so that's why they eat a carbohydrate rich diet.
Mechanical energy is the sum of two types of energy—kinetic energy and potential energy. Which of the following is an example of an object that has kinetic energy?
Answer:
There is no picture but the one that is in motion in the picture has kinetic energy.
Explanation:
Kinetic energy is the energy of motion.
hope this helped!
What is the concentration of each ion in a 0.525 mol/L solution of magnesium chloride?
mg=? cl=?
Answer:
Mg⁺² = 0.525 mol/L
Cl⁻ = 1.05 mol/L
Explanation:
The formula for magnesium chloride is MgCl₂, and in a solution the following process takes place:
MgCl₂ → Mg⁺² + 2Cl⁻By analyzing the stoichiometric coefficients, we can tell that the concentration of Mg⁺² ions is the same as the concentration of MgCl₂, while the Cl⁻ concentration is twice that value.
In other words:
Mg⁺² concentration = MgCl₂ concentration = 0.525 mol/LCl⁻concentration = 2 * MgCl₂ concentration = 1.05 mol/LWhat is the oxidation state of N in NH4?
A. -3
B. +5
C. +1
D. -5
help please!!! no links
How does the kinetic theory of gases explain the weather changes happening in the troposphere? You can also research on the internet using keywords such as troposphere, atmosphere layers, and weather changes.
Answer: According to Kinetic Molecular Theory, an increase in temperature will increase the average kinetic energy of the molecules. As the particles move faster, they will likely hit the edge of the container more often.
Answer:According to Kinetic Molecular Theory, an increase in temperature will increase the average kinetic energy of the molecules. As the particles move faster, they will likely hit the edge of the container more often.
Explanation:
Is this molecule a polar or non polar?
Answer:
This is polar
Explanation:
If the arrows are of different lengths, and if they do not balance each other, the molecule is polar.
If the arrangement is asymmetrical, the molecule is polar.
Hope this helped!!!
Drag each tile to the correct box
Arrange the steps of the scientific method in the correct order
Ask questions
Test the hypothesis
Observe,
Construct a hypothesis,
Communicate the results
Analyze the results and conclude
Answer:
Ask questions
Construct a hypothesis
Test the hypothesis
Observe
Analyze the results and conclude
Communicate the results
How many joules are required to heat 15 grams of ice from -200⁰ to 1400⁰ C?
Answer: A heat energy of 50160 joules are required to heat 15 grams of ice from [tex]-200^{o}C[/tex] to [tex]1400^{o}C[/tex].
Explanation:
Given : mass of ice = 15 g
Convert grams into kg as follows,
[tex]1 g = 0.001 kg\\15 g = 15 g \times \frac{0.001 kg}{1 g}\\= 0.015 kg[/tex]
Initial temperature = [tex]-200^{o}C[/tex]
Final temperature = [tex]1400^{o}C[/tex]
Formula used to calculate the amount of heat energy is as follows.
[tex]q = m \times C \times (T_{2} - T_{1})[/tex]
where,
q = heat energy
m = mass of substance
C = specific heat of substance (ice here has C = [tex]2090 J/kg ^{o}C[/tex])
[tex]T_{1}[/tex] = initial temperature
[tex]T_{2}[/tex] = final temperature
Substitute the values into above formula as follows.
[tex]q = m \times C \times (T_{2} - T_{1})\\= 0.015 kg \times 2090 J/kg^{o}C \times [1400 - (-200)]^{o}C\\= 50160 J[/tex]
Thus, we can conclude that 50160 joules are required to heat 15 grams of ice from [tex]-200^{o}C[/tex] to [tex]1400^{o}C[/tex].
1
An atom with 17 protons, 17 electrons and 18 neutrons has a mass number
of
Answer:
35
Explanation:
mass number = protons in the nucleus + neutrons in the nucleus
17 + 18 = 35, the mass number
Protons and neutrons are together known as nucleons.
I would appreciate Brainliest, but no worries.
the formula equation of Calcium carbonate ----> Calcium oxide + carbon dioxide
Answer:
CaCo3---> CaO +CaO2
Explanation:
process of fracking
For the balanced equation shown below, what would be the limiting reagent if 80.2 grams of N2 were reacted
with 399grams of H2O?
N2 +4H20 --> 2H2O2 + N2H4
Kill him or PS5? Which one?
What is the percent composition of oxygen in BaCrO4
Answer: The percent is 25.263%
Explanation:
A man pulled a food cart 4.5 m to the right for 15 seconds. What is the average speed of the food cart to the nearest tenth of a m/s?
Answer:
0.3m/s
Explanation:
Cause yupp
A man pulled a food cart 4.5 m to the right for 15 seconds. 0.3m/s is the average speed of the food cart to the nearest tenth of a m/s.
What is average speed?By calculating the distance an object travels in one unit by the amount of time it takes to travel that distance, one may determine the speed of the object. The speed of the item on this voyage, denoted by the letter "s," is equal to s = D/T if "D" is the distance travelled in some time "T." Average In order to comprehend the pace of a journey, speed is crucial.
During a voyage, the speed could occasionally change. Finding the median speed then becomes crucial to getting an idea of how quickly the route will be finished. You may calculate an object's speed by multiplying the distance it travels by the amount of time it takes.
Average speed = distance / time
= 4.5 m/ 15 seconds
= 0.3m/s
Therefore, 0.3m/s is the average speed of the food cart to the nearest tenth of a m/s.
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Which countries have a Desert biome?
Mexico
China
Ireland
India
Brazil
Saudi Arabia
United States
"Desert biome?" that's a funny way to put it. Well, the answer is most likely Mexico, United Stated, and Saudi arabia,
Mexico, Saudi Arabia and United States are countries which have a desert biome.
What is a Desert?
This is a barren area of landscape which is characterized by little precipitation and isn't best suited for plant or animal life.
Mexico, Saudi Arabia and United States all have the presence of desert biomes in some of its states.
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