申論題

(3) Methane (CH₄) reacts with chlorine gas (Cl₂) form chloromethane (CH₃Cl), as the following equation；

When 20.5 g of methane and 45.0 g of chlorine gas undergo a reaction that has a 65% yield. What mass of the chloromethane (CH₃Cl) forms? (Mw(CH₄) = 16.04 g/mol, Mw(Cl₂) = 70.90 g/mol, Mw(CH₃Cl) = 50.48 g/mol)