Which of the following contains the largest number of atoms?

Question

Quizplus · Accepted Answer

1 mol water contains 6.022 x 10^23 molecules, and each molecule contains 3 atoms (2 hydrogen and 1 oxygen), for a total of 1.8066 x 10^24 atoms.
1 mol phosphorus trichloride contains 6.022 x 10^23 molecules, and each molecule contains 4 atoms (1 phosphorus and 3 chlorine), for a total of 2.4088 x 10^24 atoms.
1 mol dinitrogen pentoxide contains 6.022 x 10^23 molecules, and each molecule contains 10 atoms (2 nitrogen and 5 oxygen), for a total of 6.022 x 10^24 atoms.
2 mol carbon monoxide contains 2 x (6.022 x 10^23) molecules, and each molecule contains 2 atoms (1 carbon and 1 oxygen), for a total of 2.4048 x 10^24 atoms.
Therefore, dinitrogen pentoxide contains the largest number of atoms.

Which of the Following Contains the Largest Number of Atoms