Question

How many molecules are in 2.50 moles of h2o

Answer 1

Explanation:

According to the mole concept there are $6.022 \times 10^{23}$ atoms or molecules are present in 1 mole of a substance.

Mathematically,    1 mole = $6.022 \times 10^{23}$ atoms or molecules

Therefore, calculate the number of molecules present in 2.50 moles of $H_{2}O$ as follows.

            $2.50 mol \times 6.022 \times 10^{23}}molecules/mol$

                  = $15.055 \times 10^{23}$ molecules

Thus, we can conclude that there are $15.055 \times 10^{23}$ molecules in 2.50 moles of $H_{2}O$.

Answer 2

To find out how many molecules you have, you need to multiply the number of moles with Avogadros constant: 2.50 * 6.022 * 10²³ = 1.5055 * 10^24.