5 grams of compound A reacts with 10 grams of compound B to produce a new compound C. What should be the mass of C according to law of conservation of mass?
15 g
According to the law of conservation of mass, in a chemical reaction, mass can neither be created nor destroyed and the total mass remains conserved at the end of a chemical reaction. Therefore the mass of C is 5 +10 = 15 grams.