Posted by **ana** on Monday, October 17, 2011 at 8:26pm.

When the valve between the 2.00-L bulb, in which the gas pressure is 2.00 atm, and the 3.00-L bulb, in which the gas pressure is 4.50 atm, is opened, what will be the final pressure in the two bulbs? Assume the temperature remains constan

- chem -
**DrBob222**, Monday, October 17, 2011 at 9:17pm
One way to do this is to use PV = nRT and solve for n = PV/RT.

Calculate n for one bulb and n for the other bulb, add the two and calculate P from PV = nRT using the sum of the bulbs for n. I get 3.5. What do you use for R and T. Whatever values are convenient because they end up canceling.

Another way is to look at the equation for n = PV/RT. Since T is a constant and R is a constant, we can just leave them out of the equation.

Then n1 = PV = 2*2 = 4

n2 = 3.5*4 = 13.5

Total n = 17.5

17.5 = PV. V is the total of 3L + 2L = 5L. Solve for P.

## Answer This Question

## Related Questions

- Chemistry - Bulb A is 100 mL and contains Helium at 1 atm. Bulb B is 500 mL and ...
- chemistry - Two gases are contained in gas bulbs connected by a valve. Gas A is ...
- Chemistry - If there are 2L of H2 gas at .625 atm, and 1L of N2 gas at .200 atm ...
- Chemistry - 0.000014 mol of argon gas is placed in a 600 mL light bulb. What's ...
- Chemistry URGENT/DR BOB - Dalton's Law of Partial Pressure consider the ...
- Chem - Three bulbs are connected by tubing, and the tubing is evacuated. The ...
- chem -help - Two cylinders at 27C are connected by a closed stopcock ystem. One ...
- chemistry - 17 liters of a gas is at an initial temperature of 67 degrees C and ...
- chem - A 75.0 L stainless steel container was charged with 3.00 atm of hydrogen ...
- Science - 2 spherical containers- P and Q are connected by a tap. P contains a ...

More Related Questions