Question

what amount of sucrose will contain same number of atoms as the number of ions in 2.84 milligram of Na2SO4

Answer 1

Mol. wt. of sucrose = 342 gm

Mol .wt of Na2SO4 = 142 gm

Moles = 2.84 / 142 = 0.02

No. of atoms = 0.02 NA

According to question

0.02 NA = x / 342 NA

0.02 = x / 342

x = (2 / 100)*342

x = 684 / 100

x = 6.84 gm