Question

One mole of a compound containing one mole of carbon atoms and 2 mole of oxygen atom. The molecular weight of the compound is

Answer 1

Explanation:

The molecular weight, or Mr value, is simply the sum of all the atomic masses of its components. As the Ar of carbon is 12 and Ar of oxygen is 16, that tells us that the Mr of CO2 is 12 + 2(16) = 44.