Question

What is meant by molecular mass?

Answer 1

The molecular mass of a substance is the sum of atomic masses of all the atoms in a molecule of the substance. It is used for those substances whose constituent particles are molecules.

For example:

The molecular mass of $C{O}_2=(1\times atomicmassofcarbon)+(2\times atomicmassofoxygen)$

$\Rightarrow 1\times 12+2\times 16$

$\Rightarrow 12+32=44u$