Question

How many moles are present in 63.80L of oxygen gas, O2?

Answer 1

2.85moles of oxygen gas

Step-by-step explanation:

Given parameters:

Volume of oxygen gas = 63.8L

Unknown:

Number of moles = ?

Solution:

We assume that the gas is under standard temperature and pressure. To find the number of moles, use the expression below:

1 mole of a gas at STP occupies a volume of 22.4L

So;

63.8L of oxygen gas will take up a volume of

`(63.8)/(22.4)` = 2.85moles of oxygen gas