Answer:
Step-by-step explanation:
The molar volume of a gas at STP (Standard Temperature and Pressure), which is equal to 22.4 liters.
There are 6.02x10^23 molecules in 1 mole of Argon.
So for 1.51x10^24 molecules of Argon, the volume at STP should be
(1.51x10^24 / (6.02x10^23)) * 22.4
= 56.19 liters