Question

calulate the gram molecular mass of calcium carbonate(CaCO3) (atomic mass of ca-40 o-16 c-12)​

Answer 1

Answer:

Explanation:

gram molecular mass

=40+12+16(3)

=100 g

Answer 2

Answer:

(i) Molecular mass of CaCO3 = 40 × 1 + 1 × 12 + 3 × 16

= 40 + 12 + 48

= 100 u.

(ii) (a) CO2 has molar mass = 44 g mol-1

5 moles have molar mass = 44 × 5

= 220 g

H2O has molar mass = 18 g mol-1

= 90 g.