Teacher: Dania Companioni
Multiple choices
Identify the letter of the choice that best completes the statement or answers the question.
____ 1. Which of the following usually makes a substance dissolve faster in a solvent?
a) Agitating the solution.
b) Increasing the particle size of the solute.
c) Lowering the temperature.
d) Decreasing the number of particles.
____ 2. How many mL of a 2.0 M NaBr solution are needed to make 200.0mL of 0.5 M NaBr?
a) 25 mL
b) 50 mL
c) 100 mL
d) 150 mL
____ 3. If 2.0 mL of 6.0 M HCl is used to make 500.0-mL aqueous solution, what is the molarity of the dilute solution?
a) 0.024 M
b) 0.24 M
c) 0.30 M
d) 0.83 M
____ 4. To 225 mL of a 0.8 M solution of KI, a student adds enough water to make 1.0 L of a more dilute KI solution. What is the molarity of the new solution?
a) 180 M
b) 2.8 M
c) 0.35 M
d) 0.18 M
Answers
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