Friday

October 28, 2016
Posted by **Tina** on Sunday, October 22, 2006 at 1:31pm.

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

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

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*velocity

e

- Chemistry -
**Anonymous**, Thursday, November 29, 2007 at 2:19pmiuhgpswgw

- Chemistry -
**jimmy**, Thursday, December 13, 2007 at 7:42pma)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 -
**Dr. P. R. Jones**, Tuesday, May 13, 2008 at 7:04amanswer to this is A

- Chemistry -
**Anonymous**, Tuesday, May 11, 2010 at 3:20pmEach 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?