Question

Determine number of moles of sucrose in 4g.

Answer 1

given mass of sucrose = 4g

find = the number of moles

1. molecular mass of 1 mol of sucrose

=C12H22O11

= C = 12 × 12 = 144

H = 1 × 22 = 22

O = 16 × 11 = 176

= 144 + 22 + 176 = 342 g

no. of moles = given mass × 1 mol

mass in one mol of sucrose

= 4 × 1 mol

342

= 0.012 moles of sucrose

hope this helps you :)