Question

Calculate the volume occupied by 10 mole of CO2 at STP.

Answer 1

1 mole of ANY gas occupies 22.4 or 22.7 litres at STP.

Thus 10 moles of CO2 gas will occupy 224litres at STP.

Hope this helps, inform if wrong.

And inform if you need to know how 22.4 l is derived.