Question

How many moles of CO2 are there in 2.55 x 10 18 molecules of CO2?

Answer 1

Answer: There are $4.23\times 10^{-6}moles$  of $CO_2$

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:

$\text{Number of moles}=\frac{\text{Given molecules}}{\text {Avogadros number}}$

$\text{Number of moles}=\frac{2.55\times 10^{18}}{6.023\times 10^{23}}=0.423\times 10^{-5}moles$

Thus there are $4.23\times 10^{-6}moles$  of $CO_2$