1.

(a) Mention the four informations given by an equation. (b)State the law of conservation of mass as applicable in a chemical reaction.

Answer»

Solution :(a) (i) Physical state of reactants and products.
(II) CONDITIONS such as stemperature, pressure, HEAT etc.
(iii) CATALYST involved
(iv) Change in state.
(b) TOTAL mass of the elements present in the products in a chemical reaction has to be equal to the totalmass neither be created nor destroyed in a chemical reaction .


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