Question
Asked Nov 22, 2019
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If 45.0 g of NaCL are dissolved in enough water to make 400 ml of solutions, what is the concentration of the solutions in molarity?

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Expert Answer

Step 1

The molarity of a solution can be calculated as given below.

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moles of solute Molarity Volume of solution inL

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Step 2

Moles of NaCl = mass / molar mass = 45 g / 58.5 g mol-1 = 0.77 mol.

Volume of solution is 400 ml = 400 * 10...

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0.77mol Molarity 1.925M 400 10L

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