Question

What volume does 0.25 moles of oxygen gas occupy at stp?

Answer 1

mole= Volume (at STP)/22.4

We know that mole=0.25

volume (at STP)
$0.25 \times 22.4$
= 5.6 L

Answer 2

Given :

Number of moles of Oxygen = 0.25 moles

To Find :

Volume occupied by 0.25 moles of Oxygen.

Solution :

At STP, volume occupied by 1 mole of any gaseous substance is 22.4 L.

We are required to find the volume occupied by 0.25 moles of Oxygen.

So,

Volume occupied by 1 mole of Oxygen = 22.4 L

Volume occupied by 0.25 moles of Oxygen = 22.4 × 0.25 L

                                                                          = 5.6 L

Therefore, the volume occupied by 0.25 moles of Oxygen is 5.6 L