1. How many liters of oxygen gas, at standard temperature and pressure, will react with 25.0 grams of magnesium metal?

1. How many liters of oxygen gas, at standard temperature and pressure, will react with 25.0 grams of magnesium metal? Show all of the work used to solve this problem.

2 Mg + O22 ______ MgO

2. How many grams of ethane gas (C2H6) are in a 12.7 liter sample at 1.6 atmospheres and 24°C? Show all work used to solve this problem.