Asked by Jessica

Weight of empty crucible and cover = 23.104 g
Weight of crucible, cover, MgO and Mg3N2 = 24.199 g
Weight of crucible, cover, MgOand addition of H2O and heat = 24.290

Calculate the number of moles of Mg3N2.
Jessica
The change in mass was 0.0910g
DrBob222
If you mean the mass Mg3N2 = 0.0910 then mols = grams/molar mass