Question

The mass in grams of 6.0 mol hydrogen gas (contains h2) is

Answer 1

Answer: The mass of hydrogen gas is 12 grams

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Molar mass of hydrogen gas = 2 g/mol

Moles of hydrogen gas = 6.0 moles

Putting values in above equation, we get:

$6.0mol=\frac{\text{Mass of hydrogen gas}}{2g/mol}\\\\\text{Mass of hydrogen gas}=(6.0mol\times 2g/mol)=12g$

Hence, the mass of hydrogen gas is 12 grams

Answer 2

Mass = moles x molar mass
so mass of 6 moles of h2 is: 6×1×2 = 12g