Potassium nitrate has a solubility of 32 g of KNO₃ in 100. g of H₂O at 20 °C. Determine if each of the following forms an unsaturated or saturated solution at 20 °C:
a. adding 32 g of KNO₃ to 200. g of H₂O

In a laboratory experiment, a 10.0-mL sample of NaCl solution is poured into an evaporating dish with a mass of 24.10 g. The combined mass of the evaporating dish and NaCl solution is 36.15 g. After heating, the evaporating dish and dry NaCl have a combined mass of 25.50 g.

b. What is the molarity (M) of the NaCl solution?

A semipermeable membrane separates two compartments, A and B. If the levels in A and B are equal initially, select the diagram that illustrates the final levels in a to d:

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A pickle is made by soaking a cucumber in brine, a salt-water solution. What makes the smooth cucumber become wrinkled like a prune?

An 80-proof brandy is a 40.% (v/v) ethanol solution. The "proof" is twice the percent concentration of alcohol in the beverage. How many milliliters of alcohol are present in 750 mL of brandy?

Select the diagram that represents the shape of a red blood cell when placed in each of the following a to e: (9.6)

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a. 0.9% (m/v) NaCl solution

In a laboratory experiment, a 10.0-mL sample of NaCl solution is poured into an evaporating dish with a mass of 24.10 g. The combined mass of the evaporating dish and NaCl solution is 36.15 g. After heating, the evaporating dish and dry NaCl have a combined mass of 25.50 g.

a. What is the mass percent (m/m) of the NaCl solution?