Question

What is the mass, in grams, of 1.33 mol of water, H2O? Express the mass in grams to three significant figures.

Answer 1

Answer:

I need point

Explanation:

I need point

Answer 2

Explanation:

First find the mass of 1 mole of water (Molecular mass)

$H_{2} O = 2H + O$

$

= 2(1) + 32$

$

= 34 \: grams

$

Hence 1 mole of water is 34 g

Compare

1 mole = 34 g

1.33 mole = x g

$\frac{x}{34} = \frac{1.33}{1}$

$

x = 1.33 \times 34$

$

\color{blue}{\boxed{x = 45.2}} \: \: \: \: to \: 3 \: s.f.

$

Therefore 1.33 moles of water is 45.2 grams