Question

A sample of hydrogen gas (`H_2`) has a volume of 8.56 L at a temperature of 0`"^oC` and a pressure of 1.5 atm. How do you calculate the moles of `H_2` molecules present in this gas sample?

Answer 1

We use the ideal gas equation.......`PV=nRT`, to get `n~=0.6*mol`

Explanation:

`n=(PV)/(RT)` `=` `(1.5*atmxx8.56*L)/(0.0821*L*atm*mol^-1*K^-1xx273*K)`

If we have set up this problem right, the answer should give units of moles. How many grams of dihydrogen does this represent?