The observation that 15.0 g of hydrogen reacts with 120.0 g of oxygen to form 135.0 g of water is evidence for the law of
A)definite proportions.
B)energy conservation.
C)mass conservation.
D)multiple proportions.

Question

Quizplus · Accepted Answer

This observation demonstrates the law of mass conservation, which states that mass is neither created nor destroyed in a chemical reaction. The total mass of the reactants (hydrogen and oxygen, 135.0 g) equals the mass of the product (water, 135.0 g).

The Observation That 15