Question

Calculate the molar mass of the following substances.
(a) Ethyne, C,H,
(b) Sulphur molecule, S
(c) Phosphorus molecule, P, (Atomic mass of phosphorus
= 31)
(d) Hydrochloric acid, HCI
(e) Nitric acid, HNO,​

Answer 1

Answer:

a)26g

b)256g

c)124g

d)36g

e)63g

Explanation:

ethyne is C2H2 and atomic mass of carbon is 12 and that of hydrogen is 1 so add those

(2×12)+(2×1)=26 g per mole

so similarly calculate for others