How many molecules are in each sample? 4.6 g h2o

The number of molecules present in given amount of water are

Explanation:

To calculate the number of moles, we use the equation:

Given mass of water = 4.6 g

Molar mass of water = 18.0 g/mol

Putting values in above equation, we get:

According to mole concept:

1 mole of a compound contains number of molecules.

So, 0.255 moles of water will contain number of molecules.

Hence, the number of molecules present in given amount of water are

fe 55.85 g/mol and h2o 18.02 g/mol.