Question

The molar mass of hydrogen (H2) is 2.02 g/mol. A sample contains 4.00 mol of H2. What is the mass, in grams, of this sample?

Answer 1

The mass in grams of the sample is 8.08 grams

calculation

mass=moles x molar mass

molar mass= 2.02 g/mol

mole= 4.00 mol

mass is therefore= 4.00 mole x 2.02 g/mol =8.08 grams