Question

3)Methanol can be produced as follows: CO (g) + 2 H2 (g) + CH4O (g)
If 250.0 L of hydrogen gas are reacted with excess CO at STP, how many grams of CH40 can be produced?

Answer 1

2 H2 CH40

22.4 32 g

250 x


22.4 is the volume at STP conditions, 32g is the molar mass of CH4O.
you cross multiply and the answer is 357 g