Question

How many molecule of water are there in 54g of h2o

Answer 1

Answer:

3*6.022*10^23 molecules

Answer 2

Given: 54 grams of water.

To find: We have to find the number of molecules.

Solution:

To determine the number of molecules in 54 grams of water we have to follow steps as follows-

The chemical formula of water is $H_2O$.

The molecular weight of water is 18 grams.

18 grams of water contains $6.022×10^{23}$ number of molecules.

So, 54 grams of water will contain-

$54 \times \frac{6.022 \times {10}^{23} }{18} \\ = 3 \times 6.022 \times {10}^{23} \\ = 18.066 \times {10}^{23}$

Thus 54 grams of water contains $18.066×10^{23}$ number of molecules.