How many oxygen atoms are there in 52.06 g of carbon dioxide? A) 1.018 × 10²⁴ B) 1.424 × 10²⁴ C) 6.022 × 10²³ D) 5.088 × 10²³ E) 1.204 × 10²⁴

Question

Quizplus · Accepted Answer

1 mol of CO2 contains 1 mol of C atoms and 2 mol of O atoms. 
The molar mass of CO2 is 44.01 g/mol. 
Thus, the number of moles in 52.06 g of CO2 is:
52.06 g CO2 x (1 mol CO2/44.01 g CO2) = 1.182 mol CO2
Therefore, the number of oxygen atoms in 52.06 g of CO2 is:
2 mol O atoms/mol CO2 x 1.182 mol CO2 = 2.364 mol O atoms
Finally, we use Avogadro's number to find the number of oxygen atoms: 
2.364 mol O atoms x 6.022 x 10^23 atoms/mol = 1.424 x 10^24 oxygen atoms

Therefore, the answer is B: 1.424 x 10^24.

How Many Oxygen Atoms Are There in 52