Question

A sample of CO2 contains 5.2 x1024molecules. How many moles of Carbon dioxide are in this sample?
Responses

8.6 moles
8.6 moles

0.1 moles
0.1 moles

3.1 x 1048 moles
3.1 x 10 48 moles

31.3 moles

Answer 1

To find the number of moles of carbon dioxide in the given sample, we can use Avogadro's number, which states that there are 6.022 x 10^23 molecules in one mole of a substance.

Given:

Number of molecules of CO2 = 5.2 x 10^24

Number of moles = Number of molecules / Avogadro's number

Number of moles = (5.2 x 10^24) / (6.022 x 10^23) = 8.63 moles

Therefore, the correct answer is 8.6 moles.