All of the following are heterogeneous mixtures except

• whole wheat bread.

• granite.

• tap water.

• an oil-water mixture.an oil-water mixture.

What type of solute-solvent combination is carbon dioxide in water?

• gas-liquid

• liquid-gas

• liquid-liquid

• cannot be determined

What is the molarity of a solution that contains 0.202 mol KCl (molar mass = 74.55 g/mol) in 7.98 L of solution?

• 0.0132 M KCl

• 0.0253 M KCl

• 0.459 M KCl

• 1.36 M KCl

A solution containing 35 g of Li2SO4 dissolved in 100 g of water is heated from 10°C to 90°C. According to information in the figure, this temperature change would result in

• an additional 5 g of Li2SO4 in solution.

• an additional 30 g of Li2SO4 in solution.

• 5 g of Li2SO4 precipitate.

• no change in Li2SO4 concentration.

Tags

NGSS.HS-PS1-5

According to saturation curves shown in the figure, which of the following solutions is supersaturated?

• 40 g of NaCH3COO in 100 g of water at 40°C

• 140 g of NaCH3COO in 100 g of water at 80°C

• 80 g of NaCH3COO in 100 g of water at 40°C

• 80 g of NaCH3COO in 200 g of water at 40°C

Tags

NGSS.HS-PS1-5

A dissolved solute that does not form ions is

• a nonelectrolyte.

• a weak electrolyte.

• a strong electrolyte.

• insoluble.

If the temperature stays the same, the solubility of gases in liquids

• increases with increasing pressure.

• cannot reach equilibrium.

• decreases with increasing pressure.

• does not depend on pressure.

A solution that contains a large concentration of solute but can hold even more solute is

• unsaturated and dilute.

• saturated and dilute.

• unsaturated and concentrated.

• saturated and concentrated.

It is the medium in which matter is dissolved.

• Solubility

• Solution

• Solvent

• Solute

We have 3 cups of orange juice samples, based on the color which one is SATURATED?

• Cup A

• Cup B

• Cup C

• None of the Above