Question

Carbon in the form of coal is burnt in presence of oxygen to produce carbon dioxide .
(i) Express the chemical change given above in the form of chemical equation.
(ii) Prove law of conservation of mass where mass of carbon atom is 12 units and oxygen atom is 16 units.​

Answer 1

Answer:C + O2 gives CO2

CARBON is solid (charcoal)

OXYGEN AND CARBON DIOXIDE are gases.

Explanation:the law of conservation of mass states that matter can neither be created nor destroyed.

Therefore the weight of Lhs=rhs

C = 12 units (lhs)

02=32 units (lhs)

Co2 = 44 units (rhs)

You can see that lhs = rhs