WorksheetsChapter 5 Test Review
Total questions: 69
Worksheet time: 3hrs 14mins
What is the correct molar mass for Mg(OH)2? (Round to the hundredths place)
(a)
What is the mass of one mole of Helium?
4 g
2 g
8 g
There is no way to know
Calculate the molar mass of water (H2O).
10 g/mol
17 g/mol
18 g/mol
34 g/mol
What is the molar mass of Cl2?
17 g/mol
35.5 g/mo;
71.0 g/mol
89 g/mol
What id the molar mass of UF6?
101 g/mol
238 g/mol
257 g/mol
352 g/mol
Calculate the molar mass of KOH.
28 g/mol
56 g/mol
84 g/mol
112 g/mol
Calculate the molar mass of CO2.
14 g/mol
28 g/mol
36 g/mol
44 g/mol
Calculate the molar mass of Cu2O.
37 g/mol
45 g/mol
79.5 g/mol
143 g/mol
Calculate the molar mass of water (H2O).
10 g/mol
17 g/mol
18 g/mol
34 g/mol
Find the molar masses of the following compound
C6H12O6
303.3 g/mole
102.9 g/mole
180.0 g/mol
160.0 g/mole
96.0 g/mole
Find the molar masses of the following compounds:
Ca(OH)2
303.3 g/mole
102.9 g/mole
74.1 g/mole
160.0 g/mole
96.0 g/mole
Find the molar masses of the following compounds:
(NH4)2CO3
303.3 g/mole
102.9 g/mole
74.1 g/mole
160.0 g/mole
96.0 g/mole
Find the molar masses of the following compounds:
PbSO4
303.3 g/mole
102.9 g/mole
74.1 g/mole
160.0 g/mole
96.0 g/mole
Find the molar masses of the following compounds:
NaBr
303.3 g/mole
102.9 g/mole
74.1 g/mole
160.0 g/mole
96.0 g/mole
How many moles are in 19.82 g Mg? HINT: You will need the molar mass of Magnesium.
1.226 mol Mg
481.7 mol Mg
1.000 mol Mg
0.8156 mol Mg
Calculate the mass of 5.0 mol of iron. HINT: You will need the molar mass of Iron.
8.3 x 10-24 g
0.090 g
3.0 x 1024 g
280 g
How many moles are in 16.94g of water? HINT: You will need the molar mass of H2O.
16.94 mol H2O
0.9401 mol H2O
305.3 mol H2O
1.063 mol H2O
What is the molar mass of CO2?
12 g/mol
16 g/mol
32 g/mol
44 g/mol
If a Chemistry experiment calls for 3.5 moles of MgCl2 what mass should be weighed out on a digital scale? HINT: You will need the molar mass of Magnesium chloride.
333.2 g
95.2 g
3.5 g
45.3 g
If you have weighed out 36.0 grams of water on a scale, how many moles of water do you have? HINT: You will need the molar mass of H2O.
18.0 moles
36.0 moles
2.0 moles
72.0 moles
What is the molarity of a 0.5L sample of a solution that contains 60.0 g of sodium hydroxide (NaOH)
0.8 M
1.5M
3.0M
6.0M
What is the molarity of a solution containing 4 moles of KCl in 2.5 L of solution?
1.6 M
0.63 M
10 M
2.6 M
What volume is needed to make a 2.45 M solution of KCl using 0.50 mol of KCl?
4.9 L
0.20 L
1.2 L
What is the molarity of a solution made by adding 1.565 moles of PbNO3 to 0.5 L?
300. M
31.3 M
3.13 M
1.56 M
Which solution is more concentrated?
Solution 1:
500 mL of water
100 g of salt
Solution 2:
500 mL of water
90 g of salt
Solution 1
Solution 2
They have the same concentration
I have no idea
Which of the following is the Dilution Formula?
V1M1 = V2M2
M = m/V
V = mT
PV = nRT
A dilution is when
solute is added to the volume of solution
water is added to the volume of solution
solute is removed from the volume of solution
water is removed from the volume of solution
What volume, in milliliters, of 10.0 M NaOH is needed to prepare 300.0 mL of 2.00 M NaOH by dilution?
0.067 mL
60.0 mL
100 mL
125 mL
What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO3 to a volume of 250.0 mL?
15.9 M
0.636 M
0.642 M
1.59 M
How many mL of stock solution of 2 M NaCl do you need to prepare 100 mL of 0.150M NaCl?
7.5 mL
15 mL
1333 mL
200 mL
none are correct
Calculate the Molarity in a solution containing 40.0 g of NaCl dissolved in 500.0 mL of H2O.
0.08 M
12.5 M
1.37 M
0.74 M
none are correct
Calculate the Molarity in a solution containing 40.0 g of NaCl dissolved in 0.50 liters of H2O.
0.08 M
12.5 M
1.37 M
0.74 M
Calculate the grams of NaOH present in 0.01 L of a 2.0 M NaOH solution.
0.8 grams
1.25 grams
0.3 grams
0.02 grams
A solution is made by dissolving 0.50 mole of NaCl in enough water to give a final volume of 400.0 mL. What is the molarity of the solution?
0.10 M
0.40 M
1.25 M
2.33 M
A 0.500 M solution of NaOH, which contains 0.750 mole of solute, would have a volume, in milliliters
0.667 mL
1200 mL
1500 mL
2100 mL
What is the volume, in liters, of a solution with 10.0 M and 2.00 moles of NaOH?
120 L
200 L
0.200 L
125 L
125.0 mL of 2.00 M calcium hydroxide solution is diluted to a concentration of 1.50 M. How many mL of water was added to the original volume?
167 mL
42.0 mL
93.8 mL
0.0240 mL
How many liters would you need to make a 1 M solution if you have 6 liters of 2 M Sodium Hydroxide?
6
3
4
12
If I have 340 mL of a 0.5 M NaBr solution, what will the concentration be if I add 560 mL more water to it?
.188 M
3.78 M
.389 M
1.76 M
Carbon monoxide, a deadly gas, has a chemical formula of CO (one carbon atom with one oxygen atom). If you look at the total atomic mass of CO, does carbon or oxygen make up more of the mass?
carbon
oxygen
they are exactly the same
it is impossible to tell
What percentage of the total atomic mass of carbon monoxide (CO) is composed of carbon?
29%
43%
57%
73%
What percentage of the total atomic mass of carbon monoxide (CO) is composed of oxygen?
29%
43%
57%
73%
Magnesium bromide (one magnesium atom with two bromine atoms) has a chemical formula of MgBr2. If you look at the total atomic mass of MgBr2, does magnesium or bromine make up more of the mass?
bromine
magnesium
they are exactly the same
it is impossible to tell
What percentage of the total atomic mass of magnesium bromide (MgBr2) is composed of magnesium?
13%
43%
63%
87%
What percentage of the total atomic mass of lithium phosphide (Li3P) is composed of lithium? Hint - consider all three atoms of lithium in your calculation.
13%
29%
40%
60%
What percentage of the total atomic mass of lithium phosphide (Li3P) is composed of phosphorus?
13%
29%
40%
60%
What percentage of the total atomic mass of calcium nitrate (Ca(NO3)2) is composed of nitrogen? Hint - another way to think of calcium nitrate is Ca(NO3)(NO3).
17%
24%
29%
59%
What is the percent by mass of oxygen in MgO? Hint: The attached image is an example of a worked problem other than this one.
20%
40%
50%
60%
Find the percentage composition of Mg in Mg3(PO4)2.
27.48% Mg
43.11% Mg
16.00% Mg
12.63% Mg
What is the mass percentage of Carbon in Carbon dioxide (CO2)?
27.27%
42.86%
72.73%
72.72%
Find the percent composition of CaCl2?
Ca: 36.11%; Cl: 63.88%
Ca: 53.12%; Cl: 100%
Ca: 36.11%; Cl: 83.56%
Ca: 46.11%; Cl: 63.88%
Which element in the compound potassium cyanide, KCN, has a percent composition of 60.97%?
K
C
N
None of the above
