Thursday

July 24, 2014

July 24, 2014

Posted by **E** on Friday, March 4, 2011 at 3:24pm.

a. 240. moles

b. 0.0264 moles

c. .315 moles

d. 26.5 moles

2.If a 25 liter cylinder of gaseous ammonia at atmospheric pressure (1.0 atm) is heated from 50°C to 450°C, what is the final pressure?

a. 9.0 atm

b. 0.11 atm

c. 0.45 atm

d. 2.2 atm

3.What are the relative rates of effusion of molecular hydrogen and molecular oxygen?

a. 2

b. 0.5

c. 4

d. 1

4.An unknown gas has a molecular weight of 30.07 g/mol. What is the density of the gas at STP?

a. 1.3 x 10-3 g/cm3

b. .0385 g/cm3

c. 1.5 g/cm3

d. 3.1 x 10-4 g/cm3

- Chemistry -
**DrBob222**, Friday, March 4, 2011 at 10:11pma. Use pV = nRT and solve for n= number of moles.

Then moles = g/molar mass. Solve for grams.

**Related Questions**

Chemistry - A compressed gas cylinder contains 1.00 103 g of argon gas. The ...

chemistry - A compressed gas cylinder contains 1.00 103 g of argon gas. The ...

mat 116/algebra - A cylinder has a radius of 5 in. If the volume of the cylinder...

Geometry Help & Proofs - The ratio of the volume of Cylinder A to the volume of ...

College Chemistry - If the density of cylinder 1 is 3.55 , what is the density ...

Chemistry114 - The air in a cylinder with a piston has a volume 220 ml and ...

Chemistry - A cylinder of argon gas contains 125 mol at a pressure of 150 atm ...

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

Algebra 1 - A cylinder has a radius of 5 in. If the volme of the cylinder is ...

Algebra 1 - A cylinder has a radius of 5 in. If the volme of the cylinder is ...