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What is the mass percent concentration of a solution containing 30.0 g NaCl and 170.0 mL of water? Assume a density of 1.00 g/mL for water.

What Is The Mass Percent Concentration Of A Solution Containing 300 G NaCl And 1700 ML Of Water Assume A Density Of 100 GmL For Water class=

Sagot :

The expression used to calculate the mass percent concentration is: % (m/m) = (mass of solute) / (mass of solution (solute + solvent)) x 100.

First let's transform mL into grams of water:

1 g of water ---- 1 mL of water

x g of water ---- 170 mL of water

x = 170 g of water

Now let's calculate the mass of solution:

mass of solute = 30 g of NaCl

mass of solvent = 170 g of water

solute + solvent = 30 + 170 = 200 g

% (m/m) = (mass of solute) / (mass of solution (solute + solvent)) x 100.

% (m/m) = (30g/200g) x 100.

% (m/m) = 15.0%

Answer: 15.0%

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