How many moles of hydrogen are in 0.72mol of C6H10S?

C6H10S contains 10 hydrogen atoms per molecule. To find the number of moles of hydrogen in 0.72 moles of C6H10S, you multiply the number of moles of C6H10S by the number of hydrogen atoms per molecule: 0.72 mol C6H10S × 10 mol H/mol C6H10S = 7.2 moles of hydrogen.