The fact that the complete reaction of 48.6 g of magnesium with 32.0 g of oxygen forms exactly 80.6 g of magnesium oxide illustrates
A) the law of definite proportions.
B) the law of conservation of mass.
C) the law of multiple proportions.
D) Dalton's description of the atom.

Question

Quizplus · Accepted Answer

The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction. The total mass of reactants (48.6 g of magnesium + 32.0 g of oxygen = 80.6 g) equals the mass of the product (80.6 g of magnesium oxide), illustrating this law.

The Fact That the Complete Reaction of 48