Answered: 1.A solution of zinc nitrate is added…

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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Part A

What is the molarity of fructose in this solution? Express your answer to three significant figures.

3.How many liters of water would you have to add to this solution to reduce the molarity you calculated in Part A by a factor of two?

Express your answer to three significant figures.

4. Calculate the molarity of a solution prepared by dissolving 12.1 g of Na2CrO4 in enough water to produce a solution with a volume of 690. mL.

Express the molarity to three significant digits.

5. How many moles of KBrKBr are present in 120. mLmL of a 0.130 MM solution?

6.How many milliliters of 5.7 MM HCl solution are needed to obtain 0.11 mol of HCl?

Express the volume in milliliters to two significant digits.

7. the average adult male has a total blood volume of 5.0 LL. After drinking a few beers, he has a BAC of 0.18. Blood alcohol concentration (BAC), is given in units of grams of alcohol per 100 mL of blood.

What mass of alcohol is circulating in his blood?

8. In each of the following pairs, indicate which has the higher concentration of I−I− ion.

a. 0.10 MM BaI2 0.25 MM KIsolution

b. 100 mL of 0.10 MM KIKI solution or 200 mL of 0.040 MM ZnI2 solution

c. .2 MM HI solution or a solution made by dissolving 145 g of NaI in water to make 150 mL of solution.

9. What mass of NaOHNaOH is needed to precipitate the Cd2+Cd2+ ions from 34.0 mL of 0.500 MM Cd(NO3)2 solution?

The distinctive odor of vinegar is due to acetic acid, CH3COOHCH3COOH, which reacts with sodium hydroxide in the following fashion:

10.CH3COOH(aq)+NaOH(aq)→H2O(l)+NaC2H3O2(aq)CH3COOH(aq)+NaOH(aq)→H2O(l)+NaC2H3O2(aq)

a. If 3.45 mL of vinegar needs 45.0 mL of 0.115 MM NaOHNaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.40 qt sample of this vinegar?

Express your answer using three significant figures.

11. A 4.36-gg sample of an unknown alkali metal hydroxide is dissolved in 100.0 mL of water. An acid-base indicator is added and the resulting solution is titrated with 2.50 MM HCl(aq)HCl(aq)solution. The indicator changes color signaling that the equivalence point has been reached after 17.0 mL of the hydrochloric acid solution has been added.

What is the molar mass of the metal hydroxide?

Express your answer with the appropriate units.

What is the identity of the alkali metal cation: Li+, Na+, K+, Rb+, or Cs+?

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