Question

To the nearest 0.1 g, what is the molecular weight of KOH? (numbers only)

Answer 1

The molecular weight corresponds to the sum of the atomic weights multiplied by the number of atoms of each element. To make it easier you can make the following table:

So, the molecular weight will be:

Molecular weight KOH = 39.0983 + 15.999 + 1.00784 =56.1 g/mol

Answer: 56.1