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WorksheetsStoichiometry II Review
Total questions: 13
Worksheet time: 30mins
Name
Class
Date
1.
In the ideal gas law, _____ represents moles of a gas.
a)
T
b)
V
c)
R
d)
n
2.
What is the molar mass of Mg(NO3)2
a)
148.313g/mol
b)
134.306g/mol
c)
54.311g/mol
3.
What is the molarity of a solution made from 325.4g of AlCl3 with enough water to make 500.0 mL?
a)
16.9 M
b)
4.88 M
c)
2.440 M
d)
3.6 M
4.
How many grams of solute are dissolved in 125.0 mL of 5.00M NaCl?
a)
0.625 g NaCl
b)
56.3g NaCl
c)
36.5 g NaCl
d)
0.625 mol NaCl
5.
Solution A: 10g of Na2SO4 dissolved in 200mL of water
Solution B: 20g of Na2SO4 dissolved in 400mL of water
Solution B: 20g of Na2SO4 dissolved in 400mL of water
a)
The concentration of the solutions are the same
b)
Solution A is more concentrated than Solution B
c)
Solution A is more dilute than Solution B
d)
I really like staring at clouds
6.
When an ionic compound is added to water it
a)
breaks up into its ions
b)
breaks into its elements
c)
stays together as a compound
d)
it depends on what kind of ionic compound
7.
You dissolve some salt in some water. The salt is considered the
a)
solution
b)
solvent
c)
solute
d)
soluble
8.
You dissolve some salt in water. The water is considered to be the
a)
solution
b)
solvent
c)
soluble
d)
solute
9.
CaCO3(s) –> CaO(s) + CO2(g)
If 4.74 g of calcium carbonate is heated, what volume of CO2 (g) would be produced when collected at STP?
If 4.74 g of calcium carbonate is heated, what volume of CO2 (g) would be produced when collected at STP?
a)
0.0474L
b)
1.06L
c)
0.0474mol
d)
0.697L
10.
Mg3N2(s) + 3H2O(l) ––> 3 MgO + 2NH3(g)
If 10.3 g of magnesium nitride is used, what volume of ammonia gas would be collected at 20˚C and 0.989 atm?
If 10.3 g of magnesium nitride is used, what volume of ammonia gas would be collected at 20˚C and 0.989 atm?
a)
27.1 L H2
b)
4.96 L H2
c)
0.204 L H2
d)
10.3 L H2
11.
18.26 mL of a 1.50M hydrochloric acid reacts with magnesium hydroxide. Calculate the mass of magnesium hydroxide needed for the reaction.
Mg(OH)2 + 2 HCl -> 2 H2O + MgCl2
Mg(OH)2 + 2 HCl -> 2 H2O + MgCl2
a)
4.68 g Mg(OH)2
b)
0.789 g Mg(OH)2
c)
0.0274 Mg(OH)2
d)
1.07 g Mg(OH)2
12.
You dissolved enough lithium carbonate (Li2CO3) in water to make a 2.5M solution. What is the concentration of lithium ions in the solution?
a)
2.5M Li+
b)
5M Li+
c)
1.25M Li+
d)
Mr. Besel is awesome
13.
You dissolved enough lithium carbonate (Li2CO3) in water to make a 2.5M solution. What is the concentration of carbonate ions in the solution?
a)
2.5M CO32-
b)
5M CO32-
c)
1.25M CO32-
d)
Mr. Besel is super cool
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