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Transcript
```Leader:
Course:
Instructor:
Date:
Final Review 1
Supplemental Instruction
Iowa State University
1:
a)
b)
c)
d)
e)
Define:
Molarity
Specific heat
Endothermic reaction
Exothermic reaction
Limiting reactant
2:
Balance
the following
equations:
3:
Carlie
Chem 177
Schewe-Miller
4-23-12
NH3
KNO3
B2Br6
BF3
(NH4)3PO4
+
+
+
+
+
O2
H2CO3
HNO3
Li2SO3
Pb(NO3)4
NO
K2CO3
B(NO3)3
B2(SO3)3
Pb3(PO4)4
+
+
+
+
+
H2O
HNO3
HBr
LiF
NH4NO3
Convert 9.80g of CH3 CH2OH to number of molecules of CH3 CH2OH.
4:
A compound has an empirical formula of CH2 and is found to have a molecular weight of
21,000 g/mol, what is its molecular formula?
5:
I have 2.5 moles of table salt (NaCl) in a solution that is 1.5 M. What volume of solution
do I have?
6:
My cast iron skillet, that weighs 4 kg, needs go be heated from room temperature (22oC)
to 150 oC. How much heat is required? ciron = 0.46 J/gC
Supplemental Instruction
1060 Hixson-Lied Student Success Center  294-6624  www.si.iastate.edu
7:
For the following reaction What is reduced? What is oxidized?
Cu(s) + 4HNO3(aq)
Cu(NO3)2(aq) + 2H2O(l) + 2NO2(g)
8A: Titration reveals that 11.6 mL of 3.0 M sulfuric acid are required to neutralize the sodium
hydroxide in 25.00 mL of NaOH solution. Write the Balance Chemical Equation. Write the Net
Ionic Equation. What is the molarity of the NaOH solution?
9: If 20.0 g of solid NaOH are added to 1000 mL of a solution containing 0.500 moles of HCl,
the temperature of the solution rises 6.9oC. Assuming that the total solution mass is 1000 g and
the specific heat of the solution is 4.184 J/goC, calculate the heat released by this reaction. Then
calculate ΔHrxn (i.e., the heat released per mole of NaOH).
10: What is the specific heat of a substance that absorbs 2.5 x 103 joules of heat when a sample
of 1.0 x 104 g of the substance increases in temperature from 10.0C to 70.0C?
12:Aluminum reacts with an aqueous soluteon containing excess copper (II) sulfate. If 1.85 g Al
reacts and the percentage yield of Cu is 56.6%, what mass of Cu is produced?
```