Question

calculate the no.of sodium ions in 710 g of sodium sulphate

Answer 1

molecular weight of na2so4 is 142 moles become 710/142=5 one mole of na2so4 is giving 2 moles of na+ therefore moles of na+ obtained are 10

each mole has 6.02*10^23 atoms

hence ions of na+ obtained are 6.02*10^24 ions