Unit Test — Unit test

Question 1

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

Revolt · Accepted Answer

Water molecules surround solute molecules.

Question 2

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 .

Revolt · Accepted Answer

250 mL

Question 3

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?

Revolt · Accepted Answer

240 g

Question 4

Which factor influences both solubility and the rate of dissolution?

Revolt · Accepted Answer

temperature

Question 5

best

Revolt · Accepted Answer

a suspension

Question 6

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 .

Revolt · Accepted Answer

0.151 M

Question 7

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?

Revolt · Accepted Answer

0.040 M

Question 8

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

Revolt · Accepted Answer

Add more solvent to decrease the concentration.

Unit Test — Unit test Answers

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