# chemistry

posted by Amy

A large cylinder of helium had a small hole through which the helium escaped ata rate of 0.0064 mol/hr. How long would it take for 0.010 mol of CO to leak through a similar hole if it were at the same pressure?

1. bobpursley

The effusion rate will be inversely proportional to the square root of molecular mass

rate= .0064mol/hr( sqrt MolemassHe/molmassCO)

after you compute that, then time=.010/rate
http://www.chem.tamu.edu/class/majors/tutorialnotefiles/graham.htm

## Similar Questions

1. ### Physic

7.7 mol of helium are in a 16 {\rm L} cylinder. The pressure gauge on the cylinder reads 65psi. What are (a) the temperature of the gas in Celsius and (b) the average kinetic energy of a helium atom?
2. ### physics

a dike in Holland springs a leak through a hole of area 1cm squared at a depth of 2m below the water surface. How much force must a boy apply to the hole with his thumb to stop the leak?
3. ### Chemistry

A helium balloon contains 0.54g of helium. Given the molecular weight of helium is 4.0 g/mol, how many moles of helium does it contain?
4. ### physics

A dike in Holland springs a leak through a hole of area 0.60cm 2 cm^2 at a depth of 1.4m m below the water surface. How much force must a boy apply to the hole with his thumb to stop the leak?
5. ### chemistry

A helium balloon contains 0.30g of helium. Given the molecular weight of helium is 4.0 g/mol, how many moles of helium does it contain?
6. ### physics

Problem: A long cylinder of diameter 2a has a charge per unit length, lambda, that is uniformly distributed down a very long wire. The cross section of the cylinder is not uniform, with a small hole drilled into it, which has a center …
7. ### Chemistry

A helium balloon contains 0.50 g of helium. Given the molecular weight of helium is 4.0 g/mol, how many moles of helium does it contain?
8. ### Physics

A dike in Holland springs a leak through a hole of area 0.80 cm2 at a depth of 1.2 m below the water surface. How much force must a boy apply to the hole with his thumb to stop the leak?
9. ### Physics

A dike in Holland springs a leak through a hole of area 0.80 cm2 at a depth of 1.2 m below the water surface. How much force must a boy apply to the hole with his thumb to stop the leak?
10. ### Physics

A dike in Holland springs a leak through a hole of area 0.80 cm2 at a depth of 1.4 m below the water surface.How much force must a boy apply to the hole with his thumb to stop the leak?

More Similar Questions