Question

a) Calculate the molecular mass of following compounds
(i) H2 CO3 (ii) MgSo4 (iii) Na2Co3 10 H2
O
b) What are the characteristics of the particles of matter
(3​

Answer 1

Answer:

1. 62

2. 120

3. 286

Explanation:

hope the answer will help you

Answer 2

Answer:

(1) 2H :- 2×1 =2

C:- 14

3O:- 3×16 =48

so H2CO3 :- 2+14+48= 64

(2) Mg:-24

S:-32

4O:- 4×16=64

so MgSo4:- 24+32+64=120

(3) 2Na:- 2×23=46

C:- 14

3O:- 3×16=48

20 H= 1×20=20

10 O:- 10×16= 160

so Na2Co310H2O:- 46+14+48+20+160=288