Asked by Carolina
How Many molecules Of sodium are contained in 2 L Of sodium dichromate? The density Of sodium dichromate is 3.7 g/ml
Answers
Answered by
DrBob222
This is a solid, not a solution and we assume the solid is packed in the container with no "empty" spaces.
3.7 g/mL x 2000 mL = 7,400 grams Na2Cr2O7.
mols Na2Cr2O7 = grams Na2Cr2O7/molar mass Na2Cr2O7.
mols Na2Cr2O7 x 6.02E23 = molecules of Na2Cr2O7.
Atoms Na = 2 x # molecules Na2Cr2O7.
3.7 g/mL x 2000 mL = 7,400 grams Na2Cr2O7.
mols Na2Cr2O7 = grams Na2Cr2O7/molar mass Na2Cr2O7.
mols Na2Cr2O7 x 6.02E23 = molecules of Na2Cr2O7.
Atoms Na = 2 x # molecules Na2Cr2O7.
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