Calculate the molecular mass of nitric acid, HNO3. (Atomic masses: H = 1 u; N = 14 u; O = 16 u)

Molecular mass of Nitric acid (HNO3) = 1xH + 1xN + 3xO = (1 + 14 + 48) u = 63 u

Q47 of 203 Page 129

Calculate the molecular mass of nitric acid, HNO₃. (Atomic masses: H = 1 u; N = 14 u; O = 16 u)

Molecular mass of Nitric acid (HNO₃) = 1xH + 1xN + 3xO = (1 + 14 + 48) u = 63 u

Calculate the molecular masses of the following compounds:

(a) Methanol, CH₃ OH

(b) Ethanol, C₂ H₅ OH

Calculate the molecular mass of ethanoic acid, CH₃ COOH.

(Atomic masses: C = 12 u; H = 1 u; O = 16 u)

Calculate the molecular mass of chloroform (CHCl₃). (Atomic masses: C = 12 u; H = 1 u; Cl = 35.5 u)

Calculate the molecular mass of hydrogen bromide (HBr). (Atomic masses: H = 1 u; Br = 80 u)