11) Carbon dioxide is a greenhouse gas. The main source of manmade carbon dioxide is the burning of
fossil fuels. Depending on gas mileage, an automobile burns about 133 g of gasoline (mainly octane)
every mile it drives. Approximately what mass of carbon dioxide is produced for each mile driven? In
other words, how many grams of CO2 are produced from 133 g of C8H18? The balanced reaction for
the combustion of octane is
2 C8H18 + 25 O2  16 CO2 + 18 H2O
a) About 200 g of carbon dioxide
b) About 100 g of carbon dioxide
c) About 300 g of carbon dioxide
d) About 400 g of carbon dioxide
e) About 500 g of carbon dioxide
12) How many moles of helium occupy a volume of 5.00 L at 227.0°C and 5.00 atm?
(R = 0.0821 atm•L/mol•K)
A) 0.609 mol B) 25.0 mol C) 5.00 mol D) 6090 mol E) 1.64 mol
13) What are the products from the following single-replacement reaction?
Zn(s) + CuSO4(aq) →
A) CuO and ZnSO4
B) Cu and ZnSO3
C) CuO and ZnSO3
D) Cu and ZnSO4
E) no reaction
14) The following ions Ba+2, Cl-, K+ and SO4
-2 are all dissolved in the same solution, then a precipitate
forms. What is the precipitate?
A) KCl B) BaSO4 C) BaCl2 D) K2SO4
15) What are the coefficients for the following reaction when it is properly balanced?
___Na3PO4 + ___Ba(NO3)2 → ___NaNO3 + ___Ba3(PO4)2
A) 6, 1, 3, 2
B) 2, 1, 1, 3
C) 2, 3, 6, 1
D) 2, 3, 1, 6
E) none of the above
16) If 1.000 g of tin metal reacts with 0.640 g of fluorine gas, what is the empirical formula of the product?
A) Sn2F3 B) SnF C) SnF2 D) SnF10 E) SnF4
17) Which of the following is NOT soluble in water?
A) ethanol, C2H5OH
B) octane, C8H18
C) sodium sulfate, Na2SO4
D) acetic acid, the active ingredient in vinegar, CH3COOH
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18) Name the following alkane:

A) 2,3-dimethylpentane
B) 3-isopropylbutane
C) 2-isopropylbutane
D) 3,4-dimethylpentane
E) none of the above
19) What class of compound is the following: CH3-CH2-NH2?
A) organic halide
B) aldehyde
C) amine
D) ether
E) alcoho