Question

8
.
If 0.2 mol of the following substances
are required how many grams of
those substances should be taken?
Sodium chloride, magnesium oxide,
calcium carbonate​

Answer 1

Explanation:

molarmassof NaCl=58.5

molarmassof MgO=40

molarmassof CaCo3=100

we need 0.2 mol that is 11.7g,8g,20g respectively

just multiply molar mass with the number of moles to get the required mass.