Question

3. In a package of sugar at Starbucks there are about 6.92 x 10" molecules of sucrose. CH22011. How many grams of carbon are in this package?

Answer 1

given

6.92 * 10²¹ molecules of sucrose

1 molecule of sucrose has 12 carbon atoms

6.92 * 10²¹ molecules of sucrose will have

(6.92 * 10²¹ molecules of sucrose) * (12 carbon atoms/1 molecule of sucrose)

= 8.304 * 10²² carbon atoms

1 mole of carbon contains 6.022 * 10²³ atoms of carbon

This means

6.022 * 10²³ atoms of carbon are in 1 mole of carbon

8.304 * 10²² carbon atoms will be in

==> (8.304 * 10²² carbon atoms) * (1 mole of carbon /6.022 * 10²³ carbon atoms)

= 0.138 moles of carbon

Mass of carbon = moles of carbon * molar Mass of carbon

= 0.138 moles * 12 g/mol

= 1.66 grams of carbon