Lujan Molarity Practice Question Preview (ID: 37062)
4th 9 Weeks 2nd Test.
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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) 0.21 M
c) 2.1 M
d) 4.7 M
How many moles of Ca(NO3)2 are there in 75 mL of 0.25 M solution?.
a) 0.00333 mol
b) 0.0188 mol
c) 3.33 mol
d) 18.8 mol
15 g of NaCl occupy a volume of 75 mL. What is the molarity of the solution?
a) 3.4 M
b) 0.29 M
c) 0.019 M
d) 0.0034 M
45.0 g of Ca(NO3)2 was used to create a 1.3 M solution. What is the volume of the solution?
a) 0.21 L
b) 2.1L
c) 21L
d) 0.021L
What is the molarity of a solution that contains 1.50 mol HCl in 2.50 L of solution?
a) 6.0 M
b) 0.6 M
c) 0.3 M
d) 60 M
How many moles of C12H22O11 are needed to prepare 2.50 L of 0.300 M solution?
a) 0.75 mol
b) 0.70 mol
c) 0.65 mol
d) 7.5 mol
What is the molarity of a solution that contains 122 g of MgSO4 in 3.5 L of solution?
a) 0.290 M
b) 0.550 M
c) 0.271 M
d) 0.630 M
How many moles of KI are present in 0.85 L of a 0.55 M KI solution?
a) 0.4675 mols
b) 1.55 mols
c) 3.10 mols
d) 0.935 mols
What is the molar mass of CuFeS2?
a) 184 g
b) 152 g
c) 1.108 X 10^26 g
d) 3.07 X 10^24
What was the molarity of a solution containing 4.5 moles of NaCl in 100 ml? (first convert to liters)
a) 45 M
b) 0.045 M
c) 0.078 M
d) 0.776 M
How many ml of solution are needed to make a 5.78 M solution with 2.98 moles of CaO? (hint the answer is in Liters and you must convert to ml)
a) 0.52 ml
b) 53.2 ml
c) 516 ml
d) 0.0532 ml
How many grams of NiCl2 are in 2.56 moles?
a) ~ 330g
b) ~253.44 g
c) ~0.026 g
d) ~1.54 x 10^24 g
0.450 moles of NaCl are dissolved in 95.0 mL of water. Calculate the molarity of the NaCl solution. Convert ml to liters first
a) 4.7 M
b) 0.21 M
c) 2.1 M
d) 0.0047 M
42.0 g of Ca(NO3)2 was used to create a 1.3 M solution. What is the volume of the solution?
a) .02L
b) 0.2L
c) 2.0L
d) 20L
What is the molarity of a solution containing 5 moles of solute in 250 milliliters of solution? Convert to liters first
a) 20 M
b) 2 M
c) 0.2 M
d) 200 M
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