The mass of sodium is 22,91.10e-23 g.
234 grams :)
Sodium carbonate does not exist as separate molecules as it forms an ionic lattice.
234 grams
30.115*10^23 molecules
6into23equals 138 6into23equals 138
Dividing by the molar mass of sodium carbonate, we deduce that there are 4.25 x 10-5 moles in 4.5 x 10-3 grams of sodium carbonate.
The molar mass of sodium hydrogen carbonate is 84 grams per mole, therefore 0.5 moles of it weighs 42 grams.
3.121x10-5 Grams of Na2CO3
4.5 moles
29
3 x 2 x 23 = 138g
3 x 2 x 23 = 138g