Answer:
0.326 moles
Step-by-step explanation:
Concept: Molar gas volume
We are given;
- Volume of a gas is 7.30 L
- Conditions are STP ( standard temperature and pressure)
We are supposed to determine the amount of the gas sample;
- We need to know that based on molar gas volume, 1 mole of a gas occupies a volume of 22.4 L at STP
- Thus, we can determine the number of moles of a gas that occupy 7.30 L at STP.
- Number of moles = Volume given ÷ Molar gas volume at STP
= 7.30 L ÷ 22.4 L
= 0.326 moles
Thus, the quantity of gas occupying 7.30 L at STP is 0.326 moles