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

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

Answer 2

Answer:

I need point

Explanation:

I need point