Respuesta :

1 mole => 6.023 x 10^23 molecules

x => 8.5 x 10^25 molecules

x = 8.5x10^25/ 6.023 x 10^23 = 141.1 



Explanation:

According to the mole concept, there are [tex]6.022 \times 10^{23} atoms[/tex] present in 1 mole of a substance.

Mathematically,    1 mole = [tex]6.022 \times 10^{23}[/tex] atoms or molecules

Therefore, calculate the number of moles of [tex]CO_{2}[/tex] present in [tex]8.5 \times 10^{25}[/tex] molecules as follows.

              [tex]\frac{8.5 \times 10^{25}}{6.022 \times 10^{23}}[/tex]

                 = [tex]1.411 \times 10^{2}[/tex] mol

or,              = 141.1 mol

Thus, we can conclude that there are 141.1 moles present in [tex]8.5 \times 10^{25}[/tex] molecules of [tex]CO_{2}[/tex].