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Mole And Stoichiometry Review
Test Description: A review of the Mole.
Instructions: Answer all questions to get your test result.
1) To convert from mass to moles which conversion should you use?
A
22.4L = 1 mole.
B
Avagadro\'s number = 1 mole.
C
All of these.
D
Molar Mass = 1 mole.
2) How many moles of He are in 44.8 L of He?
A
0.5
B
2.
C
1.
D
3.
3) Given 6g of Carbon, how many moles do you have?
A
2
B
0.25
C
1
D
0.5
4) Balance this reaction: _____ H2 + ______ O2 --> ____ H20
A
2, 1, 2
B
2,2,1
C
1,2,3
D
3,2,4
5) When solving a stoichiometric problem, the first step is to...
A
None of these.
B
balance the reaction.
C
multiply by a conversion factor.
D
find the mole ratio.
6) Given the reaction of 2Na + Cl2 --> 2 NaCl, how many grams of Cl2 are needed to completely react with 50g of Na?
A
35.5g
B
155g
C
23g
D
77g
7) Given 2NO2 --> N2O4, how would the number of N2O4 molecules change if I increased the NO2 molecules to 4?
A
N2O4 would double.
B
N2O4 would quadruple.
C
N2O4 would be reduced by half.
D
N2O4 wouldn't change.
8) What does the coefficient of a reactant mean?
A
The reaction rate.
B
All of these choices.
C
The number of moles you have in the reaction.
D
The number of atoms in the reaction.
9) Balance this reaction: _____ FeO --> ____ Fe + ____ O2
A
2,2,1
B
3,1,1
C
2,1,2
D
1,2,2
10) Given: C + O2 --> CO2, how many moles of CO2 will be produced by burning 12g of C?
A
24g
B
44g
C
12g
D
528g
*select an answer for all questions
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