1. A solution is made by adding 255g of sodium fluoride, NaF to 1200 mL of waterat 72°C, the density of water at 72°C is 1.0 g/mL:a) Find the mass percent of the NaF in solutionb) Find the molarityc) Find the molality2. 600 mL of a solution of 1.5 M concentration of Calcium nitrate, Ca(NO3)2would contain how many grams of calcium nitrate? 3. Lead in drinking water cannot exceed a concentration of 126 ppm, if a sample ofwater obtained contained 1.6 grams of lead per 5000 liters of water, is this watersafe to drink? Explain.

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1. A solution is made by adding 255g of sodium fluoride, NaF to 1200 mL of water at 72°C, the density of water at 72°C is 1.0 g/mL: a) Find the mass percent of the NaF in solution b) Find the molarity c) Find the molality 2. 600 mL of a solution of 1.5 M concentration of Calcium nitrate, Ca(NO03)2 would contain how many grams of calcium nitrate?

1. A solution is made by adding 255g of sodium fluoride, NaF to 1200 mL of water at 72°C, the density of water at 72°C is 1.0 g/mL: a) Find the mass percent of the NaF in solution b) Find the molarity c) Find the molality 2. 600 mL of a solution of 1.5 M concentration of Calcium nitrate, Ca(NO03)2 would contain how many grams of calcium nitrate?

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

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

1. A solution is made by adding 255g of sodium fluoride, NaF to 1200 mL of water
at 72°C, the density of water at 72°C is 1.0 g/mL:
a) Find the mass percent of the NaF in solution
b) Find the molarity
c) Find the molality
2. 600 mL of a solution of 1.5 M concentration of Calcium nitrate, Ca(NO3)2
would contain how many grams of calcium nitrate?

3. Lead in drinking water cannot exceed a concentration of 126 ppm, if a sample of
water obtained contained 1.6 grams of lead per 5000 liters of water, is this water
safe to drink? Explain.

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