Question

According to the law of conservation of mass, if an element A has an atomic mass of 2 mass units and element B has an atomic mass of 3 mass units, what mass would be expected for compound AB? for compound A2B3?

Answer 1

For compound AB, you would expect the mass to be 5 because of the law of conservation of mass.
For A2B3, you would expect the mass to be 13 because of the same reason.