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Molarity 2
Test Description: Xxx
Instructions: Answer all questions to get your test result.
1) How many grams of NaCl are in 75 mL of 0.29 M solution?
A
0.029
B
1.3
C
58
D
0.58
2) How many moles of KI are in 850 mL of 0.55 M solution?
A
0.47
B
0.94
C
1.6
D
3.1
3) What is the moarity of CH3OH in 230 mL of a solution containing 11.7 g?
A
1.59
B
0.0119
C
11.9
D
0.00159
4) How many moles of AlBr3 are in 0.500 L of 0.300 M solution?
A
0.3
B
0.15
C
150
D
5.0
5) How many moles of sugar (C12H22O11) are needed to make 2.5 L of 0.300 M solution?
A
0.70
B
0.75
C
0.65
D
3.42
6) You have 500 mL of a 1.2 M solution. What would be the concentration if you had only 50 mL of the solution?
A
1.2 M
B
6.0 M
C
0.60 M
D
0.12 M
7) What volume of 1.3 M solution would contain 42 g of Ca(NO3)2?
A
0.02 L
B
0.13 L
C
2.0 L
D
0.2 L
8) What is the new molarity when 50 mL of 0.25 M solution is diluted to 250 mL?
A
0.50 M
B
0.050 M
C
0.025 M
D
0.25 M
9) Which has the greatest molarity when dissolved in 1 L, 50 g of HF, 100 g of HCl, or 200 g HBr?
A
They are all the same.
B
HCl
C
HBr
D
HF
10) 50 g of LiCl is dissolved in 100 mL. How much NaCl would you need to make 100 mL of the same concentration solution?
A
5.0 mol
B
69 g
C
1.0 mol
D
50 g
*select an answer for all questions
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