Which of the following contains the largest number of atoms?
A)1 mol water
B)1 mol phosphorus trichloride
C)1 mol dinitrogen pentoxide
D)1 mol carbon dioxide
E)All of these contain the same number of atoms.

Question

Quizplus · Accepted Answer

Dinitrogen pentoxide has a chemical formula of N2O5, which means each molecule contains 7 atoms (2 nitrogen and 5 oxygen). 1 mole of dinitrogen pentoxide contains Avogadro's number of molecules, which is 6.022 x 10^23. Therefore, 1 mole of dinitrogen pentoxide contains 6.022 x 10^23 x 7 atoms, which is the largest number of atoms among the options provided.

Which of the Following Contains the Largest Number of Atoms