Question

Calculate the number of moles for the following:
17 g of h20

Answer 1

Explanation:

$mass \:of \: water = 17g \\ molecular \: mass \: of \: water (h2o) = \: 2 \times 1 + 16 \\ = 18g \\ no. \: of \: moles = \frac{given \: mass}{moecular \: mass} \\ no. \: of \: moles = \frac{17}{18} \\ = 0.944 \: moles$

Answer 2

Hope it's helpful

formula;

No.of moles = Given mass /Molecular mass