Chapter 3 Question 8

Which of the following statements are TRUE for one mole of a substance?

I 1 mol of nitrogen gas contains 6 x 10^23 atoms
II 1 mol of carbon dioxide contains 1.8 x 10^24 atoms
III 1 mol of iron contains 6 x 10^23 molecules
IV 1 mol of water contains the same number of molecules as the number of atoms in 12 g of carbon-12