Calculate the molarity of a solution made by dissolving 0.740 grams of Na2SO4 in enough water to form exactly 900mL of solution.
I got 0.005 M but that is not correct =/
Calculate the molarity of a solution made by dissolving 0.740 grams of Na2SO4 in enough water to form exactly?
2014-03-03 4:47 pm
回答 (1)
2014-03-03 5:16 pm
0.740 g / 142.04 g/mol = 0.00521 mol / 0.900 L = 5.79X10^-3 M
I think you didn't use the correct number of significant figures. The answer should be either 0.00579 M or 5.79X10^-3 M. Significant figures are important!!
I think you didn't use the correct number of significant figures. The answer should be either 0.00579 M or 5.79X10^-3 M. Significant figures are important!!
收錄日期: 2021-04-20 21:38:00
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