Chapter 21:
Organic Compounds
Practice Test
1.
In 2001, about 56% of the crude oil used by the United States was imported. If the United States used 20.6 million barrels of crude oil a day, how many million barrels of crude oil were imported in 2001?
a.
11.5 million barrels
b.
7,519 million barrels
c.
36.8 million barrels
d.
4,210 million barrels
Hint
2.
A car that travels 25 miles per gallon of gas is driven 12,000 miles in one year. If gasoline costs $1.55 per gallon, what was the cost of the gasoline used in one year?
a.
$480
b.
$18,600
c.
$7,740
d.
$744
Hint
3.
Fats supply 9 Calories per gram, carbohydrates and proteins each supply 4 Calories per gram. If 100 g of potato chips contain 7 g of protein, 53 g of carbohydrates, and 35 g of fats, how many Calories are in 100 g of potato chips?
a.
555 Calories
b.
900 Calories
c.
400 Calories
d.
2,000 Calories
Hint
4.
100 g of cheddar cheese has 33 g of fat. Calculate how many grams of fat are in 250 g of cheddar cheese.
a.
7.6 g
b.
82.5 g
c.
33 g
d.
13.2 g
Hint
5.
A food Calorie is an energy unit equal to 4,184 joules. If a person uses 2,070 Calories in one day, what is the power being used? Express your answer in watts.
a.
174 W
b.
86 W
c.
2,400 W
d.
100 W
Hint
6.
A barrel of oil is 42.0 gallons. About 45% of a barrel of oil is turned into gasoline during the fractional distillation process. In 2001, about 19.6 million barrels of crude oil were refined each day. How many gallons of gasoline were produced each day?
a.
0.9 million gallons/day
b.
8.8 million gallons/day
c.
370 million gallons/day
d.
18.9 million gallons/day
Hint
7.
Four molecules of a hydrocarbon contain 24 carbon atoms and 56 hydrogen atoms. What is the formula for a molecule of this hydrocarbon?
a.
C
24
H
56
b.
C
96
H
224
c.
C
4
H
4
d.
C
6
H
14
Hint
8.
For saturated hydrocarbons, the number of hydrogen atoms in a molecule can be calculated by the formula N
H
= 2N
C
+ 2, where N
H
is the number of hydrogen atoms and N
C
is the number of carbon atoms in the molecule. If a molecule of the saturated hydrocarbon decane has 22 hydrogen atoms, how many carbon atoms does a decane molecule contain?
a.
46
b.
9
c.
11
d.
10
Hint
9.
The basal metabolism rate (BMR) is the amount of energy required to maintain basic body functions. The BMR is approximately 1.0 Calories/hr per kilogram of body mass. For a person with a mass of 65 kg, how many Calories are needed each day to maintain basic body functions?
a.
24 Calories/day
b.
2.7 Calories/day
c.
65 Calories/day
d.
1,560 Calories/day
Hint
10.
The hydrocarbon octane, C
8
H
18
, has a boiling point of 259 °F. What is the boiling point of octane on the Celsius temperature scale?
a.
227 °C
b.
112 °C
c.
126 °C
d.
144 °C
Hint
