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1) Calculate the number of moles of solute present in each of the following solutions: a) 255 mL of 1.50 M HNO3(aq) b) 50.0 mg of an aqueous solution that is 1.50 m NaCl, c) 75.0 g of an aqueous solution that is 1.50% sucrose (C12H2O1) by mass.

1) Calculate the number of moles of solute present in each of the following solutions: a) 255 mL of 1.50 M HNO3(aq) b) 50.0 mg of an aqueous solution that is 1.50 m NaCl, c) 75.0 g of an aqueous solution that is 1.50% sucrose (C12H2O1) by mass.

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
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Can you please answer numbers 1-8, with solutions and final answers in two decimal places.

ANSWER THE FOLLOWING PROBLEMS AND SHOW YOUR SOLUTIONS. EXPRESS YOUR FINAL ANSWERS IN TWO DECIMAL PLACES. Write your solutions LEGIBLY. Strictly NO ERASURES. 1) Calculate the number of moles of solute present in each of the following solutions: a) 255 mL of 1.50 M HNO3(aq) b) 50.0 mg of an aqueous solution that is 1.50 m NaCl, c) 75.0 g of an aqueous solution that is 1.50% sucrose (C12H»O1) by mass. 2) Seawater contains 0.0079 g Sr2*per kilogram of water. What is the concentration of Sr2 measured in ppm? 3) Caffeine (CSH10N4O2) is a stimulant found in coffee and tea. If a solution of caffeine in chloroform (CHCI3) as a solvent has a concentration of 0.0500 m, calculate: a) the percent caffeine by mass b) the mole fraction of caffeine 4) How many grams of sulfur (Ss) must be dissolved in 100.0 grams of naphthalene (C10 Hs) to make a 0.12 m solution? 5) A commercial bleaching solution contains 3.62 mass % sodium hypochlorite, NaCIO. What is the mass of NaCIO in a bottle containing 2.50 kg of bleaching solution? 6) Determine the molarity for each of the following solutions: a) 0.444 mol of CoCl2 in 0.654L of solution b) 0.2074 g of calcium hydroxide, Ca(OH)2, in 40.00 mL of solution c) 10.5 kg of NazSO4-10H2O in 18.60 L of solution 7) What mass of ferric hydroxide is needed to prepare 500 mL of a 0.25N solution? 8) A solution of sulfuric acid contains 15.71% H2SO4 by mass. What is the normality of the sulfuric acid solution assuming you have IL of the solution? ******
Transcribed Image Text:ANSWER THE FOLLOWING PROBLEMS AND SHOW YOUR SOLUTIONS. EXPRESS YOUR FINAL ANSWERS IN TWO DECIMAL PLACES. Write your solutions LEGIBLY. Strictly NO ERASURES. 1) Calculate the number of moles of solute present in each of the following solutions: a) 255 mL of 1.50 M HNO3(aq) b) 50.0 mg of an aqueous solution that is 1.50 m NaCl, c) 75.0 g of an aqueous solution that is 1.50% sucrose (C12H»O1) by mass. 2) Seawater contains 0.0079 g Sr2*per kilogram of water. What is the concentration of Sr2 measured in ppm? 3) Caffeine (CSH10N4O2) is a stimulant found in coffee and tea. If a solution of caffeine in chloroform (CHCI3) as a solvent has a concentration of 0.0500 m, calculate: a) the percent caffeine by mass b) the mole fraction of caffeine 4) How many grams of sulfur (Ss) must be dissolved in 100.0 grams of naphthalene (C10 Hs) to make a 0.12 m solution? 5) A commercial bleaching solution contains 3.62 mass % sodium hypochlorite, NaCIO. What is the mass of NaCIO in a bottle containing 2.50 kg of bleaching solution? 6) Determine the molarity for each of the following solutions: a) 0.444 mol of CoCl2 in 0.654L of solution b) 0.2074 g of calcium hydroxide, Ca(OH)2, in 40.00 mL of solution c) 10.5 kg of NazSO4-10H2O in 18.60 L of solution 7) What mass of ferric hydroxide is needed to prepare 500 mL of a 0.25N solution? 8) A solution of sulfuric acid contains 15.71% H2SO4 by mass. What is the normality of the sulfuric acid solution assuming you have IL of the solution? ******
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