Question

water contains 5 mol of water.How many molecules of water are present?

Answer 1

Your answer is ----

we know that 1 mol water contain 6.023×10^23 molecules .


So,

5 mol water contain 5×6.023×10^23 molecules


Hence , 5 mol water contain 5×6.023×10^23 = 3.0115 × 10^24 molecules

Answer 2

Given: The given quantity is 5 moles of water.

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

Solution:

To determine the number of molecules of 5 moles of water we have to follow the below steps-

Water has a mass number 18.

We know that one mole of water has $6.023×10^{23}$ number of molecules.

Thus 5 moles of water atom will have-

$5 \times 6.023 \times {10}^{23} \\ = 30.115 \times {10}^{23}$

The result is $30.115×10^{23}$.

Thus the number of molecules is $30.115×10^{23}$.

5 moles of water has $30.115×10^{23}$ number of molecules.