How many grams of carbon are contained in 53.74 g of caffeine (C 8 H 10 N 4 O 2 )? Strategy grams of C 8 H 10 N 4 O 2 ➡ mol of C 8 H 10 N 4...
How many grams of carbon are contained in 53.74 g of caffeine (C8H10N4O2)?
Strategy
grams of C8H10N4O2 ➡ mol of C8H10N4O2 ➡ mol of carbon ➡ grams of carbon
Step-by-Step
1. Convert grams of caffeine to moles (using the molar mass of C8H10N4O2)
2. Convert the moles of caffeine to moles of carbon. For this, you need the mol ratio between the caffeine and carbon according to the chemical formula. That is, 1 mol of C8H10N4O2 per 8 moles of carbon. Use this as the conversion factor.
3. Finally, convert moles of carbon to grams (using the molar mass of carbon).
