Question

How many moles of water are there in 54g of H2o?

Answer 1

Answer:

3 moles

Explanation:

The molar mass of water is 18 g/mol.

The mass of water is 54 g.

The number of moles of water =18g/mol54g=3mol.

Answer 2

Given: 54 grams of water.

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

Solution:

To determine the number of moles we have to follow the below steps-

The chemical formula of water is $H_2O$.

The atomic number of H is 1 and the atomic number of oxygen is 16.

Thus the molecular weight of water is 1×2+16=18 gram.

Thus 18 grams of water occupy 1 mole.

So, 54 grams of water will occupy 54/18=3 moles.

Thus, the number of moles in 54 grams of water is 3.