Tuesday

October 21, 2014

October 21, 2014

Posted by **Kim** on Wednesday, June 20, 2012 at 1:02pm.

- General Chemistry -
**DrBob222**, Wednesday, June 20, 2012 at 2:24pmThe easy way to explain but the long way to work it is the following:

Use PV = nRT. You know V = 2.00L, you can assume any value for T, you know n = 0.500(2.00 g/molar mass He). Solve for P.

Then for the 2.7O L volume, use PV = nRT, substitute P from the first calculation, T is the same as in the first, and solve for n. Multiply by molar mass to obtain grams and subtract from the original 2.00 to find how much additional He was added.

**Answer this Question**

**Related Questions**

chm - A cylinder with a movable piston contains 2.00 of helium,He, at room ...

Chemestry - A cylinder with a movable piston contains 2.00 of helium, , at room ...

CHEM - A cylinder with a movable piston contains 2.00 of helium, , at room ...

college chemisrty - A cylinder with a movable piston contains 2.00 of helium, , ...

CHEM - A cylinder with a movable piston contains 2.00g of helium, He, at room ...

Chemistry - A 6.00 ft cylinder has a radius of 26 in. It contains 189 lb of ...

Chemistry - I need help with part b here's all information. (a) Chlorine gas is ...

Physics - A clown at a birthday party has brought along a helium cylinder, with ...

Chemistry 140A - A gas cylinder containing 6.38 mol of neon has a pressure of ...

Physic - 7.7 mol of helium are in a 16 {\rm L} cylinder. The pressure gauge on ...