1. How many grams of glucose (C6H12 06) would you need to prepare 2.0 L of 2% glucose solution (M/V)?

How many grams of glucose must be added to 275 g of water in order to prepare each of the following percent-by-mass concentrations of aqueous glucose solution? a. 1.30% b. 5.00% c. 20.0% d. 31.0%

How many grams of lactose must be added to 655 g of water in order to prepare each of the following percent-by-mass concentrations of aqueous lactose solution? a. 0.50% b. 2.00% c. 10.0% d. 25.0%

6-19 In each of the following, tell whether the solutes and solvents are gases, liquids, or solids. (a) Bronze (see Chemical Connections 2E) (b) Cup of coffee (c) Car exhaust (d) Champagne

6-60 Predict which of these covalent compounds is soluble in water. (a) C2H6 (b) CH3OH (c) HF (d) NH3 (e) CCI4

Insulin is a hormone responsible for the regulation of glucose levels in the blood. An aqueous solution of insulin has an osmotic pressure of 2.5 mm Hg at 25C. It is prepared by dissolving 0.100 g of insulin in enough water to make 125 mL of solution. What is the molar mass of insulin?

6-74 An osmotic semipermeable membrane that allows only water to pass separates two compartments, A and B. Compartment A contains 0.9% NaCI, and compartment B contains 3% glycerol C3H8O3. (a) In which compartment will the level of solution rise? (b) Which compartment (if either) has the higher osmotic pressure?

A pharmacist prepares an isotonic saline solution for intravenous infusion. Instead of preparing a 0.15 M solution, a 1.5 M solution is prepared. What would happen to the red blood cells if this erroneously prepared solution is infused?

6-21 Are mixtures of gases true solutions or heterogeneous mixtures? Explain.

6-103 A swimming pool containing 20,000. L of water is chlorinated to have a final CI2 concentration of 0.00500 M. What is the CI2 concentration in ppm? How many kilograms of CI2 were added to the swimming pool to reach this concentration?