Sample Problem X. Percentage mass weight by volume and sample preparation Calculate the % w/v of 623 mg of casein in 15.0 mL of milk. Describe how to prepare this solution Given mass of solute = 623 mg casein volume of Solution = 15.0 ml. milk Ask for: % mass (w/v) and description on how to prepare this solution ||

Sample Problem X. Percentage mass weight by volume and sample preparation Calculate the % w/v of 623 mg of casein in 15.0 mL of milk. Describe how to prepare this solution Given mass of solute = 623 mg casein volume of Solution = 15.0 ml. milk Ask for: % mass (w/v) and description on how to prepare this solution ||

Chemistry & Chemical Reactivity

9th Edition

ISBN:9781133949640

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter13: Solutions And Their Behavior

Section13.1: Units Of Concentration

Problem 1CYU: (a) If you dissolve 10.0 g (about one heaping teaspoonful) of sugar (sucrose, C12H22O11) in a cup of...

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A gaseous solute dissolves in water. The solution process has H=15 kJ. Its solubility at 22C and 6.00 atm is 0.0300 M. Would you expect the solubility to be greater or less at (a) 22C and 1 atm? (a) 18C and 6 atm? (a) 15C and 10 atm? (a) 35C and 3 atm?
A solution is made by dissolving 34.0 g of NaCl in 100 g of H2O at 0C. Based on the data in Table 8-1, should this solution be characterized as a. saturated or unsaturated b. dilute or concentrated
Patients undergoing an upper gastrointestinal tract laboratory test are typically given an X-ray contrast agent that aids with the radiologic imaging of the anatomy. One such contrast agent is sodium diatrizoate, a nonvolatile water-soluble compound. A 0.378-m solution is prepared by dissolving 38.4 g sodium diatrizoate (NaDTZ) in.l.60 102 mL water at 3 1.2C (the density of water at 31.2C is 0.995 g/cm3). What is the molar mass of sodium diatrizoate? What is the vapor pressure of this solution if the vapor pressure of pure water at 31.2C is 34.1 torr?
The Henry's law constant for the solubility of radon in water at is 9.57106 M/mm Hg. Radon is present with other gases in a sample taken from an aquifer at 30C. Radon has a mole fraction of 2.7106 in the gaseous mixture. The gaseous mixture is shaken with water at a total pressure of 28 atm. Calculate the concentration of radon in the water. Express your answers using the following concentration units. (a) molarity (b) ppm (Assume that the water sample has a density of 1.00 g/mL.)
A solution is made by dissolving 0.455 g of PbBr2 in 100 g of H2O at 50C. Based on the data in Table 8-1, should this solution be characterized as a. saturated or unsaturated b. dilute or concentrated
Hexachlorophene has been used in germicidal soap. What is its molar mass if 0.640 g of the compound, dissolved in 25.0 g of chloroform, produces a solution whose boiling point is 61.93 C?
(a) If you dissolve 10.0 g (about one heaping teaspoonful) of sugar (sucrose, C12H22O11) in a cup of water (250. g), what are the mole fraction, molality, and weight percent of sugar? (b) Seawater has a sodium ion concentration of 1.08 104 ppm. If the sodium is present in the form of dissolved sodium chloride, what mass of NaCl is in each liter of seawater? Seawater is denser than pure water because of dissolved salts. Its density is 1.05 g/mL
mol (M Which solution is the most concentrated? O 0.3 mole of solute dissolved in 200mL of solvent O 0.4 mole of solute dissolved in 100mL of solvent O 0.1 mole of solute dissolved in 400mL of solvent O 0.2 mole of solute dissolved in 300mL of solvent hp 23 $ % & @ 3 5 2 e d. a Cc 0O
above solution was 10.00%, what wa 3. what mass of Nall is needed to so ppm Nall and 2soml m= ? Nally 25oml
On the basis of 1,000 mL final solution, it is desired to prepare an aqueous solution containing 20% by weight CuSO4. a) How much blue vitriol(CuSO4.5H2O) crystals must be added to 2.0 L of water at 30oC? b) Calculate the volume of solution formedin m3/m3 of water used at 30oC. c) Find the composition of the solution in mol %, vol%, molarity, molality.Ρwater = 0.996 g/mL ρsolution = 1.2 g/mL
Example 8: Calculate the weight percentage of solution prepare by mixing 5.0g AgNO3 with 100 mL water (density 1g/cm3). WI of solute
Aqueous solution has: solute = 55 mol%. MW solute = 46 g/mol. Solute- solvent mass ratio = ? (answer in nearest %3D Choose