how do you find the mass of hydrogen when yo know the volue is 36?

Answer 1

What are the units for volume? Is it 36 liters, mls, etc? You also need to know the temperature of the hydrogen. Then you use the ideal gas law PV = nRT and solve for n (moles)

P is the pressure in atmospheres

V is the volume in liters

R is the gas constant of 0.0821 Latm/Kmole

T is the temperature in Kelvin

After finding n, you multiply that by 2 g/mole (molar mass of H₂ gas) to find the mass.