Question

How may moles are in 19L of oxygen gas?

Answer 1

Answer:

$0.85\,\,mole$

Explanation:

Given: 19 L of oxygen gas

To find: Number of moles in 19 L of oxygen gas

Solution:

In International System of Units, the mole is the unit of measurement for amount of substance. A mole of a mole of particles is defined as exactly 6.02214076×10²³ particles. Particles may be atoms, molecules, ions, or electrons.

As 1 mole = 22.4 L, 1 L = 1/22.4 mole

So, $19L=\frac{19}{22.4}\,\,moles=0.85\,\,mole$