Question

There are 2.43 x 1026 molecules of water in the Pacific Ocean. How many moles of water is this?

Answer 1

Answer:

$n = 403.520\,mol$

Explanation:

The number of moles is given by dividing the total number of molecule of water by the Avogradro's Number:

$n = \frac{2.43\times 10^{26}\,molecules}{6.022\times 10^{23}\,\frac{molecules}{mol} }$

$n = 403.520\,mol$

Answer 2

Answer: Thus there are 404 moles of water in this.

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given molecules}}{\text {avogadro's number}}$

$\text{Number of moles of water}=\frac{2.43\times 10^{26}}{6.023\times 10^{23}}=404moles$

Thus there are 404 moles of water in this.