In a chemical reaction, the mass of the products the mass of the reactants.

is greater than
is less than
is equal to
has no relationship to

is equal to

Explanation: According to the law of conservation of mass, mass can neither be created nor be destroyed. The mass has to be same on both sides of the reaction and to make this happen, the number of atoms of every element must be equal in reactants and products.

2 moles of hydrogen weigh=

1 mole of oxygen weigh = 32 g

Mass of reactants = 36 g

2 moles of water weigh=

Mass of products = 36 g

Thus mass of reactants = mass of products = 36 g

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