Unit Test — Unit test Answers

A number of beakers have different concentrations of a solution. Which statement best describes the most concentrated solution?

What is the name of a solution whose concentration of solute is equal to the maximum concentration that is predicted from the solute's solubility?

Given that the molar mass of NaCl is 58.44 g/mol, what is the molarity of a solution that contains 87.75 g of NaCl in 500. mL of solution?Use .

Which statements are true of heterogeneous mixtures? 1) They settle out. 2) The proportions of solute to solvent may vary. 3) The solute is evenly distributed throughout. 4) They are composed of two solvents and two solutes.

Which factor causes a decrease in the rate of dissolution?

What type of mixture scatters light and cannot be filtered easily?

Which is true about the dissolving process in water?

In a coffee shop, the following coffee samples are prepared for customers.i. 10 g of sugar added to 100 g of coffeeii. 10 g of sugar added to 200 g of coffeeiii. 4 g of sugar added to 200 g of coffeeiv. 4 g of sugar added to 100 g of coffeeBased on the amount of sugar added, which sequence ranks the coffee from the sweetest coffee to the least-sweet coffee?

A 1.00 L volume of HCl reacted completely with 2.00 L of 1.50 M Ca(OH)2 according to the balanced chemical equation below.2HCl + Ca(OH)2 CaCl2 + 2H2OWhat was the molarity of the HCl solution?

The table below shows four samples of carbon dioxide gas and the temperature of the water that they were dissolved in.SampleTemperature of water (°C)1 782 733 554 63Which of the samples most likely had the lowest solubility?

The picture below shows a mixture that was stirred 3 minutes ago.What should this mixture be classified as?

Which heterogeneous mixture contains large particles that can settle out or can be filtered?

Which is a way to express concentration of a solution?

The water in a 150-mL flask is poured into a beaker that contains 600 mL of ethyl alcohol. Which substance is the solvent in this mixture?

Which is true about the dissolving process in water?

Which is a characteristic of a homogeneous mixture that is a liquid?

Which substance is an example of a colloid?

Which refers to a mixture that contains more than one phase in which the characteristics of the particles vary throughout the mixture?

A stock solution is made by dissolving 66.05 g of (NH4)2SO4 in enough water to make 250 mL of solution. A 10.0 mL sample of this solution is then diluted to 50.0 mL. Given that the molar mass of (NH4)2SO4 is 132.1 g/mol, what is the concentration of the new solution?Use and .

Which best describes the Tyndall effect?