Unit Test — Unit test Answers

Brownian motion is not observed in a mixture that includes two phases. Which best identifies the mixture?

Which statement best describes the process of making a solution by diluting a stock solution?

A chemist dilutes a 1.0 mL sample of 2.0 M KNO3 by adding water to it. If the concentration of the solution that is obtained is 0.0080 M, what is its volume?Use .

A 150 mL sample of hydrochloric acid (HCl) completely reacted with 60.0 mL of a 0.100 M NaOH solution. The equation for the reaction is given below.HCl + NaOH NaCl + H2OWhat was the original concentration of the HCl solution?

The molar mass of KCl is 74.55 g/mol. If 8.45 g KCl are dissolved in 0.750 L of solution, what is the molarity of the solution?Use .

Which statement accurately describes part of the dissolving process of a polar solute in water?

Which factor influences both solubility and the rate of dissolution?

The graph below shows how solubility changes with temperature.How many grams of NaCl will be needed to form 600 mL of a saturated solution at 100°C?