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

Answer:

If 0.2 mol of the following substances are required how many grams of those substances should be taken?

a. Sodium chloride

b. Magnesium oxide

c. Calcium carbonate

ANSWER

The formula to find out the weight of substance is,

Weight of substance (gm) = Number of moles × Molar Mass.

(i) For sodium chloride:-

Weight of sodium chloride = Number of moles × molar mass.

= 0.2 × 58.44

= 11.69 grams.

(ii) For Magnesium Oxide:

Weight of magnesium oxide = Number of moles × Molar mass.

= 0.2 × 40.3

= 8.06 grams.

(iii) For calcium carbonate:

Weight of calcium carbonate = Number of moles × Molar Mass.

=0.2×100.087

=20.02grams.

Explanation:

here you go.