mass percentage of water in this...?

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mass percentage of water in this...?

whats the mass percentage of water in sodium carbonate decahydrate

2007-10-22 15:49:53 · 3 answers · asked by Janie 2 in Science & Mathematics ➔ Chemistry

3 answers

You get this from the formula:

Na2CO3 (10 H2O)

Divide the weight of the 10 waters by the total weight of the compound (including the 10 waters)

10 x [(2 x 1) + 16]/(23 x 2) + 12 + (3 x 16) + 10 x [(2 x 1) + 16]

180/(106 + 180) = 0.629 or 62.9%

2007-10-22 15:56:58 · answer #1 · answered by Flying Dragon 7 · 0⤊ 0⤋

Mass Percent Of Water

2016-12-11 16:57:23 · answer #2 · answered by Anonymous · 0⤊ 0⤋

You need to add up the total molecular mass.

the formula is Na2CO3 dot 10 H2O

So add up all th epieces. Now calulate the fraction of 10H2O (has a mass of 180) against the total and convert to percent

2007-10-22 15:54:01 · answer #3 · answered by reb1240 7 · 0⤊ 0⤋