Respuesta :

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

Answer: The mass of hydrogen gas is 12 grams

Explanation:

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

[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}[/tex]

Molar mass of hydrogen gas = 2 g/mol

Moles of hydrogen gas = 6.0 moles

Putting values in above equation, we get:

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

Hence, the mass of hydrogen gas is 12 grams

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