Question

Q3. Find the relative molecular mass of
a) (i) CaCO3 and (ii) HNO3 (iii) HCI
(Given Ca = 40 u; Cl = 35.5 u; H = 1 u; N = 14 u; 0 = 16 u)
b)Calculate the number of particles in:
(i) 8 g of Oz molecules (ii) 46 g of magnesium atoms
(Given 0 = 16 u; Mg = 24u; Avogadro No = 6.022x10 per mole)​

Answer 1

Answer:

a) (i) CaCO3 and (ii) HNO3 (iii) HCI

(Given Ca = 40 u; Cl = 35.5 u; H = 1 u; N = 14 u; 0 = 16 u)

b)Calculate the number of particles in:

(i) 8 g of Oz molecules (ii) 46 g of magnesium atoms

(Given 0 = 16 u; Mg = 24u; Avogadro No = 6.022x10 per mole)

Explanation: