Question

Calculate the number of mole in 11.2l,at stp of oxygen​

Answer 1

`\boxed {\boxed {\sf 0.5 \ moles}}`

Step-by-step explanation:

At standard temperature and pressure (STP), 1 mole of any gas has a volume of 22.4 liters. This applies to oxygen, so let's create a proportion.

`\frac {1 \ mol}{22.4 \ L}`

Since we are trying to find the moles in 11.2 liters, we should multiply by that number.

`11.2 \ L *\frac {1 \ mol}{22.4 \ L}\\`

The units of liters cancel.

`11.2 *\frac {1 \ mol}{22.4 }`

Condense into 1 fraction.

`\frac {11.2 }{22.4 } \ mol`

`0.5 \ mol`

At STP, 11.2 liters of oxygen gas is equal to 0.5 moles of oxygen gas.