Question

Approximately what volume do 3.0 moles of kr gas occupy at stp? 80.0 40.0 l none of the above 20.0

Answer 1

None of the above.
1 mole filled with gas at STP occupies
=22.4 L

∴ 3mole of kr gas at STP occupies
= 3 × 22.4
=  67.2 L

Answer 2

Answer:

The answer is: none of the above

Explanation:

1 mol of gas ideal occupies a volume of 22.4 L, then 3 moles of Kr gas occupies, using the following rule of three:

1 mol ------------ 22.4 L

3 moles--------- X

Clearing X:

$X=\frac{3moles*22.4L}{1mol} =67.2L$