Question

. How many moles are there in 8.5x 1025 molecules of co2

Answer 1

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 

Answer 2

Explanation:

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

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

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

              $\frac{8.5 \times 10^{25}}{6.022 \times 10^{23}}$

                 = $1.411 \times 10^{2}$ mol

or,              = 141.1 mol

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