Question

Antoine Lavoisier found that mass was conserved in chemical reactions when he saw that A) heat was released in chemical reactions. B) the products differed greatly from the reactants. C) the mass of the products was the same as that of the reactants. D) the mass of the products were heavier than the mass of the reactants.

Answer 1

the mass of the products was the same as that of reactents .i tried if right like me if wrong comment in me if wrong iam so sorry

Answer 2

C) the mass of the products was the same as that of the reactants.

Explanation:

According to the law of conservation of mass given by Lavoisier mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

$2H_2+O_2\rightarrow 2H_2O$

mass of hydrogen= 4 g

Mass of oxygen = 32 g

mass of water = $2\times 18=36g$

Thus mass or reactants = mass of hydrogen + Mass of oxygen = 4 g + 32 g = 36 g

Mass of product = mass of water = 36 g

Thus the total mass of reactants is equal to the total mass of products.

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