Question

2KNO3 → 2KNO2 + O2

After 55.551 grams of solid KNO3 (molar mass = 101.102 g/mol) completely decomposes, what volume of oxygen gas, O2, is produced at Standard Temperature and Pressure (STP)?

Answer 1

Answer: 6.1539 L

Step-by-step explanation:

55.551 g/101.102 g/2 mole KNO3 x 1mole O2 X 22.4 L/mol = 6.1539 L