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 FINALANSWERS 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 massb) the mole fraction of caffeine4) How many grams of sulfur (Ss) must be dissolved in 100.0 grams of naphthalene (C10 Hs) to make a 0.12m solution?5) A commercial bleaching solution contains 3.62 mass % sodium hypochlorite, NaCIO. What is the massof 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 solutionb) 0.2074 g of calcium hydroxide, Ca(OH)2, in 40.00 mL of solutionc) 10.5 kg of NazSO4-10H2O in 18.60 L of solution7) 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 acidsolution assuming you have IL of the solution?******

Answered: Image /qna-images/answer/42b84529-5e85-410c-8b7d-f026c18ac65b.jpg

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.

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter15: Solutions

Section: Chapter Questions

Problem 6ALQ: onsider separate aqueous solutions of HCI and H2S04 with the same concentrations in terms of...

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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

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?
******

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