Question

What weight of carbon dioxide will occupy the same volume as 40 grams of oxygen at NTP?

Answer 1

First calculate how many moles of O2 you have. O is 16g/mole, so O2 is 32g/mole. 50/32 = 1.5625 moles. 1 mole of any gas at stp is 22.4 liters.

1.5625 × 22.4 = 35 liters.