Which best represents the law of conservation of mass? mass of reactants > mass of products mass of reactants < mass of products mass of reactants = mass of products mass of reactants → mass of products

mass of reactants = mass of products

Explanation: According to the law of conservation of mass, mass can neither be created nor be destroyed, and remains conserved. The mass of products must be same as that of the reactants.

Thus the number of atoms of each element must be same on both sides of the equation so as to keep the mass same and thus balanced chemical equations are written.

The mass of 1 mole of hydrogen gas is 2 g and mass of 2 mole of hydrogen gas= 4g

Mass of 1 mole of oxygen gas= 32 g

Mass of water= 18 g and mass of 2 moles of water= 36 g

Mass of reactants (Mass of hydrogen + mass of oxygen) = mass of products (mass of water)

4g+ 32g=36 g

36 g = 36 g