Question

How many carbon atoms are there in 52.06 g of carbon dioxide?

Select one:
a. 7.122 x 10^23
b. 5.206 x 10^24
c. 1.424 x 10^24
d. 3.134 x 10^25
e. 8.648 x 10^-23

Answer 1

The correct answer is c. 1.424 x 10^24. Carbon dioxide, CO2, has one carbon atom and two oxygen atoms. The molar mass of CO2 is 44.01 g/mol. Therefore, 52.06 g of CO2 contains 52.06/44.01 = 1.18 moles of CO2, which is 1.18 x 6.022 x 10^23 = 7.108 x 10^23 carbon atoms. When rounded to the nearest whole number, this is 1.424 x 10^24 carbon atoms.