Calculate the molar mass of: (a) Ethyne (b) Sulphur molecule (c) Phosphorus molecule (d) Hydrochloric acid (e) Nitric acid

Molar mass of the following substances are as follows:

(a) Ethyne, C2H2
Molar mass of ethyne, C2H2 = 2 x 12 + 2 x 1 = 26 g

(b) Sulphur molecule, S8
Molar mass of sulphur molecule, S8 = 8 x 32 = 256 g

(c) Phosphorus molecule, P4 (atomic mass of phosphorus = 31)
Molar mass of phosphorus molecule, P4 = 4 x 31 = 124 g

(d) Hydrochloric acid, HCl
Molar mass of hydrochloric acid, HCl = 1 + 35.5 = 36.5 g

(e) Nitric acid, HNO3
Molar mass of nitric acid, HNO3 = 1 + 14 + 3 x 16 = 63 g

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