How many molecules are there in 223 grams of Na2SO4?

Question

asked Sep 27, 2020 120k views

1 Answer

WPFNewbie · Answer 1 · 2020-10-02T08:11:36+0000

= 9.45 × 10^23 molecules

The molar mass of Na2SO4 = 142.04 g/mol

Number of moles = mass/molar mass

= 223/142.04

= 1.57 moles

But;

1 mole = 6.02 × 10^23 molecules

Therefore;

1.57 moles = ?

= 1.57 × 6.02 × 10^23 molecules

= 9.45 × 10^23 molecules