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find mass of sodium in total mixture?
mixture of compound sodium sulphide and calcium chloride is 62.3 % by mass calcium chloride; the compound sodium sulphide is 58.9% by mass sodium. calculate the mass(g) of sodium in the mixture
1 Answer
- Brian GLv 61 decade agoFavorite Answer
You can't calculate the mass of the sodium unless you first know the mass of the entire solution.
You know that Sodium Sulphide is Na2S, The atomic weight of Na is 22.99. S is 32.07. Therefore Na2S is 78. Percentage of Sodium in the Na2S is 46/78 = 58.9%
Assuming the total mass f the mixture is 100 grams, the mass of the Na2S is 37.7 grams. The sodium accounts for 58.9% of that, which would be 22.21 grams.
