Answer:
[tex] \huge{ \boxed{132 \: g}}[/tex]
Explanation:
To find the mass of the molecule given it's number of moles, we first find the molar mass of [tex] CH_4 [/tex] after that we use the formula;
mass(g) = Molar mass (g/mol) × moles
Molar mass of [tex] {CH_4} [/tex] = 12 +4(1) = 12+4 = 16 g/mol
number of moles = 8.25 mol
mass = 16 × 8.25 = 132
We have the final answer as
132 g