Question

How many moles make up 5.7491x1025 molecules of Dinitrogen pentoxide (N2O5)?

Answer: ??? moles N2O5 (round to 3 sig figs)

Answer 1

95.5 moles

Step-by-step explanation:

To find the number of moles in a substance given it's number of entities we use the formula

`n = (N)/(L) \\`

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

`n = \frac{5.7491 * {10}^(25) }{6.02 * {10}^(23) } \\`

We have the final answer as

95.5 moles to 3 sig. figures

Hope this helps you