Homework Help: science

Posted by billystar on Wednesday, April 23, 2008 at 10:17pm.

1. the molar mass of helium is 4.00 g/mol.
calculate the volume of 1 mol of helium at STP (T = 273, P = 1 atm)
what is the density of helium at STP?

2. the density of an ideal gas is 1.35 kg/m^3. if the temperature is Kelvin and the pressure are both doubled, find teh new density of the gas.

science - bobpursley, Thursday, April 24, 2008 at 6:11am
see above

Answer this Question

Related Questions

HELLO I NEED HELP AND NOBODY EVER HELPS ME. - 1. the molar mass of helium is 4....
chem - A balloon filled with 22.3 mol helium has a volume of 500. L at 0.0°C...
chem - A balloon filled with 22.3 mol helium has a volume of 500. L at 0.0°C...
Chemistry - A helium balloon contains 0.54g of helium. Given the molecular ...
physics - Two copper cylinders, immersed in a water tank at 46.3°C contain ...
physics - Two copper cylinders, immersed in a water tank at 46.3°C contain ...
Chemistry - A helium baloon has a volume of 28.9L, what is the mass of helium ...
Chemistry - Ideal Gas Law - You have a weather balloon that is filled with ...
chemistry - A fully sealed 50m^3 room at atmospheric pressure and temperature ...
Chem - What is the density of N2O, a gas, at STP? How many moles are in 16 grams...

For Further Reading

First Name:
School Subject:
Answer: