Question

How many moles of CO2 are there in 8.91 x 1023 molecules of CO2? (1 mole= 6.02 x 1023)

Answer 1

Answer:

1.48 moles

Explanation:

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

$n = \frac{N}{L}$

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

$n = \frac{8.91 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{8.91}{6.02} \\ = 1.480066...$

We have the final answer as

1.48 moles

Hope this helps you