Posted by sam on .
How many atoms of hydrogen are found in 2.48 mol of propane, C3H8?
Someone can explain to me. Thanks

chemistry 
DrBob222,
How many molecules do you have in 2.48 moles C3H8? There are 6.022 x 10^23 molecules in 1 mol; therefore, there must be 2.48 x 6.022 x 10^23 molecules in 2.48 moles. That is 1.49 x 10^24 molecules. Then each molecule C3H8 has 8 H atoms so total number of H atoms must be 1.49 x 10^24 x 8 = ??. Check my arithmetic.