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

The answer is: none of the above

Step-by-step 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=(3moles*22.4L)/(1mol) =67.2L`

Answer 2

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