Question

A metallic nitrate undergoes thermal decomposition giving a coloured gas

Answer 1

Explanation:

Velocity is defined as the Rate of change of displacement

Velocity = d/t

50 /2 = 25

V= u + at

25 = 10 + a× 2

a = 15/2

a = 7.5

=

Answer 2

Answer:

nitrogen dioxide

Explanation:

2 AgNO3 ---> 2 Ag + 2 NO2 + O2

silver nitrate is formed, which is a silver residue along with nitrogen dioxide.