What is the volume of a sample of ammonia gas (NH3) if it contains 0.23 moles?

The volume of a sample of ammonia gas : 5.152 L

Given

0.23 moles of ammonia

Required

The volume of a sample

Solution

Assumed on STP

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.

So for 0.23 moles :

= 0.23 x 22.4 L

= 5.152 L

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)