Question

Compute the ratio by mass of Calcium carbonate, Hydrogen Sulphide​

Answer 1

Answer:

(a) Given:

Atomic mass of H = 1 u

Atomic mass of S = 32 u

Therefore, molecular mass of H2S can be calculated as follows:

(2 × 1) + (1 × 32) = 34

Hence, molecular mass of hydrogen sulphide is 34 u.

Divide the measured mass of calcium carbonate (16 g) by the molar mass of the compound (100 g) to get 16 ÷ 100 = 0.16 moles.