Question

There are two different questions

1)Calculate the molecular weight of sodium nitrate. [Na = 23, N = 14 and O = 16

2)When copper [II] nitrate is heated in a hard glass test tube:
(i) State the colour change in crystal on heating.
(ii) State the colour of gas evolved which turns KI paper brown.
(iii) State the colour and nature of gas evolved which rekindles glowing splint.​

Answer 1

Explanation:

two differences in the first and