How do you calculate molecular weight?

Molecular weight is calculated by summing the atomic weights of all atoms in a molecule.

• The atomic weight of an element can be found on the periodic table.

• Multiply the atomic weight of each element by...read more

H2o

Atomic mass. H. =1

Atomicmass. O. = 16

Molecular weight. H2o= 1×2+16

= 2+16

=18 .g