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Molarity
Test Description: Different Molarity Problems
Instructions: Answer all questions to get your test result.
1) How many ml of solution are needed to make a 5.78 M solution with 2.98 moles of CaO?
A
516 ml
B
53.2 ml
C
0.0532 ml
D
0.52 ml
2) What is the molarity of a solution that contains 122 g of MgSO4 in 3.5 L of solution?
A
0.271 M
B
0.550 M
C
0.630 M
D
0.290 M
3) How many moles of KI are present in 0.85 L of a 0.55 M KI solution?
A
0.4675 mols
B
0.935 mols
C
1.55 mols
D
3.10 mols
4) If salt is being dissolved into water, salt is the
A
solvent
B
cool thing
C
solute
D
dissolvee
5) A solute that does NOT conduct electricity is called
A
Solvent
B
Electrolyte
C
Nonelectrolyte
D
Solute
6) Molality is
A
mols of solute / kg of solute
B
mols of solvent / kg of solute
C
mols of solute / kg of solvent
D
mols of solvent / kg of solvent
7) What is the molar mass of CuFeS2?
A
152 g
B
3.07 X 10^24
C
184 g
D
1.108 X 10^26 g
8) What was the molarity of a solution containing 4.5 moles of NaCl in 100 ml?
A
0.776 M
B
0.045 M
C
45 M
D
0.078 M
9) How many grams of KCO3 are needed to make a 22.4 M solution within 3.6 L?
A
80.64 moles
B
7983.36 g
C
0.81 grams
D
99 g
10) How many grams of NiCl2 are in 2.56 moles?
A
0.026 g
B
332g
C
253.44 g
D
1.54 x 10^24 g
11) 0.450 moles of NaCl are dissolved in 95.0 mL of water. Calculate the molarity of the NaCl solution.
A
0.0047 M
B
2.1 M
C
4.7 M
D
0.21 M
12) 45.0 g of Ca(NO3)2 was used to create a 1.3 M solution. What is the volume of the solution?
A
360 mL
B
4.7 mL
C
0.21 mL
D
211 mL
*select an answer for all questions
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