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Determine the molarity of a solution formed by dissolving 19 g of NaBr in enough water to yield 755 mL of solution. Report your answer to the correct number of significant figures and do not include units. (MW of NaBr = 102.894 g/mol) %3D

Determine the molarity of a solution formed by dissolving 19 g of NaBr in enough water to yield 755 mL of solution. Report your answer to the correct number of significant figures and do not include units. (MW of NaBr = 102.894 g/mol) %3D

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Determine the molarity of a solution formed by dissolving 19 g of NaBr in enough water to yield 755 mL of solution. Report your answer to the correct number of significant figures and do not include units. (MW of NaBr = 102.894 g/mol) %3D
Transcribed Image Text:Determine the molarity of a solution formed by dissolving 19 g of NaBr in enough water to yield 755 mL of solution. Report your answer to the correct number of significant figures and do not include units. (MW of NaBr = 102.894 g/mol) %3D
Expert Solution
Step 1

The expression for calculating the molarity of a solution is as follows,

                                  Molarity= No. of moles of soluteVolume of solutionM= nV

Given:

Mass of NaBr                     = 19 g

Volume of solution            = 755 mL

Molecular weight of NaBr  = 102.894 g/mol

Step 2

To find the moles of NaBr in solution,

Mass of NaBr=19 gMolar mass of NaBr=102.894 g/mol

Substituting the values in the following expression,

        Moles of NaBr=MassMolar mass=19 g102.894 g/mol=0.1847 mol

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