# chemistry

5.85g of sodium chloride is dissolved in 250mL of solution. Calculate: a)the molarity of the solution b)the mass percentage of the solute. can we use the given volume(i.e,250mL as total volume of the solution or volume of water in this problem?

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1. The problem tells you that the total solution is 250 mL. However, in the absence of more information I think you must use it both ways.
mols NaCl = grams/molar mass, then M = mols/L soln.

% w/w = (g solute/(250+5.85)*100 = ?
Technically I don't think you can calculate % w/w since you don't know the density of the solution.

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2. 2.3

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3. Molarity 0.4

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4. 2.2%

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5. chemistry

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6. Gemeda

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7. Molarity 0.4

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8. Molarity 0.4
Mass percentage 2.2 %

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