Question

(1)mention four important informations given by an equation.(2) state the law of conservation of mass applicable in a chemical reaction

Answer 1

Answer:

(a) The four types of information given by an equation are as follows :

(i)   Physical state of reactants and products.

(ii)  Conditions such as temperature, pressure and heat.

(iii) Catalyst involved.

(iv) Change in the state.

(b) Total mass of the elements present in the reactants of a chemical reaction has to be equal to the total mass of elements present in the products.

Answer 2

Explanation:

4 imp info tht is gvn by equ r :

1. it tells us the state of element.

2. it tells the physical and chemical state of element .

3. catlyst invovled

4. evolution of gas and precipitation reaction

 conservation of mass tells us that mass can neither  be created nor destroyed.