Question

The molar mass of H2O is 18g/mol.What is the number of moles in 90 gram water?

Answer 1

`\huge{ \boxed{ \: 0.5 \: \text{mol}}}`

Step-by-step explanation:

The number of moles of
`H_2O` can be found by using the formula;

`n = (m)/(M)`

From the question;

m = 90 g

M = 180 g/mol

`\therefore \: n = (90)/(180) = (1)/(2) = 0.5 \: mol`