Question

4. Convert into mole.
a. 24 g of oxygen gas
b. 36 g of water
C. 22 g of carbon dioxide​

Answer 1

Explanation:

1. given mass of oxygen gas = 24 g

moleculer mass of Oxygen gas = 2 * 16

= 32

number of Mole = given mass / moleculer mass

= 24 / 32

= 0.75 moles.

2. given mass of water = 36 g

moleculer mass of water = 2+ 1 * 16

= 18

number of mole = given mass / moleculer mass

= 36/ 18

= 2 moles.

3. given mass of carbon dioxide = 22 g

molrculer mass of carbon dioxide = 12 + 2 * 16

= 44 g

number of mole = given mass / moleculer mass

= 22 / 44

= 0.5 moles.