# You purchased a 5.00 pound bag of sugar (sucrose, C12H22O11) at the grocery last week to bake cookies. Conversion: 1 pound = 1 lb = 454 grams.

a.How many grams of sucrose did you purchase?

454 grams (g) = 1 pound (lb)

454 g * 5 = 2270 g

A 5 pound bag of sugar is equal to 2270 grams of sugar.

b.Calculate the formula weight of sucrose.

Formula weight = mass of Carbon + mass of Hydrogen + mass of Oxygen

= (12.0107 * 12) + (1.00794 * 22) + (15.9994 * 11)

=144.1284 + 22.17468 + 175.9934

=342.29648

=342.396 g/mol

c.How many moles of sucrose did you purchase?

2270g C12H22O11 * (1 mol)/(342.396 g/mol) =6.62975034755 moles

2270 grams of C12H22O11 is equal to 6.632 moles

d.In a separate shopping trip you bought a container of sucrose that contained 1.76 x 1024 sucrose molecules. How many grams of sucrose did you purchase?

I was able to complete parts a-c but i'm not sure how to solve part d.