Question

Write down the formula of:a) Calcium sulphateb) Sodium carbonatec) Aluminium oxide. OR Find the molecular mass of the following compounds;a) Na2CO3 b) H2SO4c) HNO3(Atomic mass of H = 1u, C = 12u, N = 14u, O = 16u, Na = 23u and S = 32u)​

Answer 1

Answer:

Molecular mass of HNO

3

is the sum of the atomic masses of H,NO

So 1+14+16×3=63 u.

Answer 2

Answer:

a) CaSO4

b)NaCO3

c) Al2O3