IF 4.0g of H2 are made to react w/ excess CO, how many g of CH3OH can THEORETICALLY be produced according to?

Question

the following equation?

CO (g) + 2H2 (g) yields Ch3OH (l)

Answer 1

First convert the mass of H2 into moles of H2 by dividing by the molar mass of H2. From the balanced equation, you will obtain 1 mole of methanol (CH3OH) for every 2 moles of H2. Use the molar mass of methanol to convert the moles of methanol into grams of methanol, and you're finished.