Exam 5: Solution Concentration

A stockroom attendant has a 15.0% (w/v) solution of KOH. What volume of this solution should she use if she needs to prepare 20.0 mL of a 10.0% (w/v) solution?

Consider two solutions, A and B, separated by a seminpermeable membrane that allows water and small molecules to pass through as shown below. Fill the blank(s) with the appropriate terms from the list below. right left osmosis dialysis -Solution A is 0.10 M in fructose and 0.05 M in glucose. Solution B is 0.20 M in sucrose. The direction of osmosis will be to the _______________________.

Consider the solutions shown in the containers below. The composition of each solution is given in the image. Fill the blank with the appropriate term from the list below. isotonic hypotonic hypertonic crenation hemolysis no change -A red blood cell is placed in the solution in container B. The cell will undergo ____________________.

Consider the two containers separated by a semipermeable membrane that allows both glucose and sucrose to pass through. Answer the following questions as appropriate with: right, left, or no movement. -Calculate the parts per million (ppm) of a solution prepared by dissolving 7.45 mg of glucose in enough water to produce 145.0 mL of solution?

A solution is made by dissolving 5.84 grams of NaCl in enough distilled water to give a final volume of 1.00 L. What is the molarity of the solution?

The solubility of a compound in water was measured and found to be 0.7 g/L. This compound would be classified as insoluble.

A solution has a concentration of 16 ppm. Which of the following is another way to describe the concentration of this solution?

How many grams of solid KCl are needed to prepare 250.0 mL of 0.235 M solution?

A normal concentration of sodium (Na) in blood plasma is 141 mEq/L (US average range is 135-145 mEq/L). How many mg of sodium are there in a 10.0 mL sample of his blood plasma?

The solubility of Na₂SO₄ will probably increase with increasing temperature.

For a 2.00 M solution, the conversion factor for determining the number of moles of solute in a given volume of solution is:

Consider the solutions shown in the containers below. The composition of each solution is given in the image. Fill the blank with the appropriate term from the list below. isotonic hypotonic hypertonic crenation hemolysis no change -The tonicity of the solution in container C is ______________________.

Solution contains 55 mg of magnesium in 2.5 L of solution. The concentration of this solution is 2.2 mg/dL.

The vitamins A (retinol) and C (ascorbic acid) are shown below. All atoms other than C and H are explicitly shown. A C Complete the following questions be entered in the appropriate letter (A or C) in the blank provided. -The vitamin that would be classified as fat-soluble is ______.

Consider the two containers separated by a semipermeable membrane that allows both glucose and sucrose to pass through. Answer the following questions as appropriate with: right, left, or no movement. -Upon standing the glucose molecules will move in which direction?

Saline solutions (NaCl in water) used to deliver intravenous drugs are 0.89%(w/v). What mass of NaCl would be needed to prepare 450.0 mL of such a solution?

Consider the two containers separated by a semipermeable membrane that allows both glucose and sucrose to pass through. Answer the following questions as appropriate with: right, left, or no movement. -Upon standing the sucrose molecules will move in which direction?

What is the mass of salt in a 400.0 gram-sample of salt water which is 1.50% (w/w) salt?

Calculate the number of moles of ZnCl₂, in 180.0 mL of 0.330 M solution.

For the following questions, fill in the blank with one of the following terms as appropriate. increase decrease remains constant cannot predict -As the size of the hydrophobic portion of a molecule increases, the solubility in water will ___________.