Question

10 Calculate the percentage composition by weight of the following compounds:
(1) Calcium carbonate (CaCO3)
(u) Sodium peroxide (Na2O2)​

Answer 1

Step-by-step explanation:

In 100 g CaCO

3

, 40 g Ca is present.

In 4 g CaCO

3

, Let x g Ca be present

4

x

=

100

40

⟹x=1.6 g