How many grams are in 2.20 moles of C6H14?

Question

The 6 in Carbon is the subscript.

The 14 in Hydrogen is the subscript.

Answer 1

You start with the moles and use the molar mass to convert it into grams. 6 carbon with 12.01 g/mol gives 72.06 g of C. 14 H with 1.01 g/mol gives 14.14 g of H. Together it makes 86.2 g of C6H14. Using that as conversion factor, we get 2.2 moles C6H14 times 86.2 g C6H14 / mol = 189.64 grams of C6H14.