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Glycerol, C3H8O3, is a substance used extensively in themanufacture of cosmetics, foodstuffs, antifreeze, and plastics.Glycerol is a water-soluble liquid with a density of 1.2656 g/mL at15 C.

alculate the molarity of a solution of glycerol made bydissolving 53.000mL glycerol at 15 ?C in enough water to make300.00mL of solution.

Express your answer using five significant figures.

M = ?? M

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Please help me solve this questions for solution concentratrions. I don't really know how to get to the answer.

1) Calculate the molarity of a solution made by dissolving 123.4 g of sodium sulfate (Na₂SO₄) in enough water to form 525.0mL of solution.

2) What is the molarity of a solution that is made by dissolving 13.68g of sucrose (C₁₂H₂₂O₁₁) in sufficient water to form 225.0mL of solution?

3) Calculate the molarity of a solution made by dissolving 15.00 g of glucose (C₆H₁₂O₆) in sufficient water to form exactly 200mL of solution.

4) What is the molar concentration of each ion present in a 0.225 M aqueous solution of calcium nitrate?

5) What is the ratio of the concentration of potassium ions to the concentration of carbonate ions in a 0.1275 M solution of Aluminium carbonate?

6) What is the molar concentration of K⁺ ions in a 0.0175 M solution of potassium Phosphate?

7) How many grams of Na₂SO₄ are required to make 1.250 L of 0.800 M Na₂SO₄?

8) What is the concentration of ammonia in a solution made by dissolving 13.75 g of ammonia in 8.0 L of water?

9) (a) How many grams of Na₂SO₄ are there in 250 mL of 0.50M Na₂SO₄? (b) How many milliliters of 0.50 M Na₂SO₄ solution are needed to provide 0.038 mol of this salt? (c)How many milliliters of 2.5M H₂SO₄ are needed to make 450mL of 0.20M H₂SO₄?

10) What volume of 1.00M stock solution of glucose must be used to make 200.0mL of a 2.75x10^â2M glucose solution in water?

11) (a) What volume of 2.80 M lead(II) nitrate solution contains 0.550 mol of Pb²⁺? (b) How many milliliters of 5.0 M K₂Cr₂O₇ solution must be diluted to prepare 550 mL of 0.20 M solution? (c) If 20.0 mL of a 10.0 M stock solution of NaOH is diluted to 250 mL, what is the concentration of the resulting stock solution?

12) Glacial acetic acid with density 1.049 g/ml â Calculate the molarity if 20.00 ml of glacial acetic acid dissolved in enough water to produce 250.00 ml of the solution.

13) Glycerol, C₃H₈O₃, with density of 1.2656 g/ml. Calculate the molarity of a solution of glycerol, when 50.00 ml of glycerol dissolved in enough water to make 500.00 ml of the solution.

1. 62.0

m L

of 8.5

(m / v) %

K C l

(MW = 74.55

g / m o l

)

Express your answer using two significant figures.

2.250.0

m L

of 9.0

(m / v) %

acetic acid (MW = 60.05

g / m o l

)

Express your answer using two significant figures.

3.If you had only 25

g

K O H

remaining in a bottle, how many milliliters of 6.5

% (w / v)

olution could you prepare?

Express your answer using two significant figures.

4.How many milliliters of 0.17

M

solution could you prepare?

Express your answer using two significant figures.

5.Calculate the mass percent (m/m) of a solution prepared by dissolving 46.79

g

N a C l

in 160.5

g

H_{2} O

Express your answer to four significant figures.

6.Calculate the mass percent (m/m) of a solution prepared by dissolving 46.79

g

N a C l

in 160.5

g

H_{2} O

Express your answer to four significant figures.

7.Calculate the mass/volume percent (m/v) of 14.0

g

N a C l

in 61.5

m L

of solution.

Express your answer to three significant figures.

8.Calculate the molarity (

M

) of 153.5

g

H_{2} S O_{4}

in 1.085

L

of solution.

Express your answer to four significant figures.

9.What is the boiling point of a solution made using 827

g

of sucrose,

C_{12} H_{22} O_{11}

, in 0.200 k

k g

of water,

H_{2} O

10.What is the freezing point of a solution that contains 29.5

g

of urea,

C O (N H_{2})_{2}

, in 205

m L

water,

H_{2} O

? Assume a density of water of 1.00

g / m L

11.Given the formula

C_{1} V_{1} = C_{2} V_{2}

, where

C C

indicates concentration and

V V

indicates volume, which equation represents the correct way to find the concentration of the dilute solution (

C_{2} C_2

12.What is the final volume

V_{2} V_2

in milliliters when 0.935

L

of a 48.0

%

(m/v) solution is diluted to 24.7

%

(m/v)?

13.A 738

m L

N a C l

solution is diluted to a volume of 1.15

L

and a concentration of 3.00

M

. What was the initial concentration

C_{1} C_1

Express your answer with the appropriate units.

tealdog287

Q1) Calculate the mass of nitrogen dissolved at room temperature in an 77.0 L home aquarium. Assume a total pressure of 1.0 atm and a mole fraction for nitrogen of 0.78.

Express your answer using two significant figures

Q2) Magnesium citrate, Mg3(C6H5O7)2, belongs to a class of laxatives called hyperosmotics, which are used for rapid emptying of the bowel. When a concentrated solution of magnesium citrate is consumed, it passes through the intestines, drawing water and promoting diarrhea, usually within 6 hours.

Calculate the osmotic pressure of a magnesium citrate laxative solution containing 29.5 g of magnesium citrate in 254 mL of solution at 37 âC (approximate body temperature). Assume complete dissociation of the ionic compound.

Q3)An aqueous NaCl solution is made using 120 g of NaCl diluted to a total solution volume of 1.15 L .

Calculate the molarity of the solution.

Express your answer using three significant figures.

Calculate the molality of the solution. (Assume a density of 1.08 g/mL for the solution.)

Express your answer using two significant figures.

Calculate the mass percent of the solution. (Assume a density of 1.08 g/mL for the solution.)

Express your answer using three significant figures.

Q4)

To what volume should you dilute 56.5 mL of a 4.45 M KI solution so that 23.5 mL of the diluted solution contains 3.20 g of KI?

Q5)

Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample contains 0.0013 % Pb by mass.

How much of the water (in mL) contains 145 mg of Pb? (Assume a density of 1.0 g/mL.)

Express your answer using two significant figures.

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