Question

How many moles of oxygen (O2) are present in 33.6 L of the gas at 1 atm and 0°C?

A: 1.5
B: 2
C: 22.4
D: 32

Answer 1

A- 1.5

Step-by-step explanation:

Answer 2

The condition at 1 atm and 0°C is considered "Standard Temperature and Pressure" (a.k.a STP). At STP, all gases have an approximate volume of 22.4 L/ 1 mol.

33.6 L* (1 mol/ 22.4 L)= 1.5 mol.
(Note that the unit cancels out so you get the answer)

The correct answer is A. 1.5~