Chemistry

posted by .

Balloon- CO2
Balloon- O2
Balloon- He
Balloon- N2
Balloon- CH4

Represented above are five identical balloons, each filled to the same volume at 25 degrees Celcius and 1.0 atmosohere pressure with the pure gases indicated.

A) which balloon contains the greatest mass of gas? explain

B) Compare the average kinetic engeries of the gas molecules in the balloons. explain.

C)Which balloon contains the gas that would be expected to deviate mose from the behavior of an ideal gas? explain.

D)12 hours after being filled, all the balloons have decreased in size. Predict which balloon will be the smallest


Balloon- CO2
Balloon- O2
Balloon- He
Balloon- N2
Balloon- CH4

Represented above are five identical balloons, each filled to the same volume at 25 degrees Celcius and 1.0 atmosohere pressure with the pure gases indicated.

A) which balloon contains the greatest mass of gas? explain

Look at PV=nRT. If P is the same, V is the same, R and T are constants (and therefore the same), then n must be the same for each gas. So calculate for a number of mols (just pick a number, such as 1) the molar mass.

B) Compare the average kinetic engeries of the gas molecules in the balloons. explain.

KE = 1/2 mv2

C)Which balloon contains the gas that would be expected to deviate mose from the behavior of an ideal gas? explain.

Deviations from ideal behavior are a function of size and attraction to other molecules. Look for the molecule that is the largest and might have some attractions to each other.

D)12 hours after being filled, all the balloons have decreased in size. Predict which balloon will be the smallest

I would look for the molecule that I thought might have the best chance of getting through the pores of the balloon walls.



For A)
wat do i plug in if they don't give me a volume.and will i get the number of moles from the PV=nRT, or is there another step?

For B)
what do i do if they don't give me a volume?



Assume any volume you wish. It doesn't matter as long as you use the same number for all of them. And there is no other step. Just use 1 for P, 22.4 for V, (although you can pick any number), use 0.08206 for R and use 273 for T. But I had envisioned you doing it simpler than that. Since the problem says the same conditions, then we know P is the same, we know V is the same, we know R is the same and we know T is the same;therefore, n (the number of mols) MUST be the same. So make it easy on yourself and pick 1 mol for n to start with. NOW, calculate the mass of 1 mol of CO2, O2, N2, He, etc etc. That will be 44 g for CO2, 32 g for O2, 28 g for N2, etc. You get the idea? Then you just compare to see which balloon has the highest mass and which the lowest mass.


I gave you the formula for KE which is 1/2*mass*velocity2. But the average KE is proportional to the temperature; that is, at the same temperature, all gases have the same average KE. The masses will be different and the speeds of the small molecules will be greater than those of larger molecules but the average KE will be the same.


e

  • Chemistry -

    iuhgpswgw

  • Chemistry -

    a)CO2- has highest molecular weight
    b) all of them same because kinetic energy is determined by temperature, and that's the same
    c)CO2- has most electrons
    d) He-smallest size

  • Chemistry -

    answer to this is A

  • Chemistry -

    Each balloon was filled with an identical number of moles of gas. Which of the following best explains why balloon B is larger than balloon A?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    You have two gas-filled balloons, one containing He and the other containing H2. The H2 balloon is twice the size of the He balloon. The pressure of gas in the H2 balloon is 1 atm, and that in the He balloon is 2 atm. The H2 balloon …
  2. chemistry

    hot-air balloon is filled with air at a volume of 3.64 x 10^3 m^3 at 745 torr at 39C. the air in balloon is heated to 60C, causing balloon to expand to a volume of 4.50x 10^3 m^3. what is the ratio of the number of moles of the air …
  3. Physics

    An empty rubber balloon has a mass of 0.012kg. the balloon is filled with helium at 0 degrees celcius, 1 atm pressure, and a density of 0.179 kg/m3. the filled balloon has a radius of 0.5 m. a)what is the magnitude of the buoyant force …
  4. Chemistry

    A helium balloon is filled to a volume of 2.88 x 10^3L at 722 mm Hg and 19 degrees Celcius. When the balloon is released, it rises to an altitude where the pressure and temperature are 339 mm Hg and -55vC, respectively. What is the …
  5. chemistry

    Balloon X is filled with the carbon monoxide. Balloon Y is filled to the same volume with carbon dioxide. The balloons are left for several days in a room at constant temperature. Which balloon would you expect to be smallest after …
  6. Chemistry

    a helium balloon is partially filled with 28.7 L of gas at 25.0 degress celcius and a pressure of 1 atm. if the balloon is released and it floats up intp the atmosphere to a heightwhere the pressure is 2.8 x 10^-3 atm and the temperature …
  7. Chemistry

    You have two gas-filled balloons, one containing He and the other H2. The H2 balloon is twice the size of the He balloon (let the He balloon have a volume of 1 -L and the H2 balloon. a volume of 2 L). The pressure of gas in the H2 …
  8. chemistry

    a balloon is filled to a volume of 7.00 x 10 to the second mL at a temperature of 20.0 degrees celcius. the balloon is then cooled at a constant pressure to a temperature of 100 k. what is the final volume of the balloon?
  9. ap chemistry

    A 1.50 liter tank filled with helium at 125 atm is used to fill balloons. The pressure in each balloon is 950 torr and the volume of each balloon is 1.20 liters. How many balloons can be filled?
  10. Physics

    An empty rubber balloon has a mass of 0.0120 kg. The balloon is filled with helium at 0 degrees celsuis, 1 atm pressure, and a density of 0.179kg/m^3. The filled balloon has a radius of .5m a)What is the magnitude of the net force …

More Similar Questions