Chem 065 - Introductory General Chemistry » Winter 2024 » Practice Dimensional Analysis
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Question #1
How many inches are in 25.8 cm?
A.
28.3
B.
none of these
C.
0.0984
D.
0.1
E.
10.2
Question #2
How many grams are in 1.48 × 107 μg?
A.
none of these
B.
1.48 × 103
C.
1.48 × 1013
D.
1.48
E.
14.8
Question #3
How many low dose 81 mg aspirin tablets can be made from 1.21 kg of aspirin?
A.
1.21 × 103 tablets
B.
1.5 × 104 tablets
C.
1.21 × 104 tablets
D.
1.5 × 105 tablets
E.
1.5 × 103 tablets
Question #4
A 12-oz can of soda pop costs eighty-nine cents. A 2.00 L bottle of the same variety of soda pop costs $2.29. How many times more expensive it is to buy the 12-oz can of pop compared to buying it in a 2.00 L bottle? (1.00 L = 1.057 quart and 1 quart contains 32 oz)
A.
2.8
B.
1.9
C.
2.2
D.
4.2
E.
2.6
Question #5
How many cm3 are there in 2.5 m3?
A.
2.5 × 10-2
B.
none of these
C.
2.5 × 102
D.
2.5 × 106
E.
2.5 × 10-6
Question #6
How many cm3 are there in 1.25 ft3? 1 ft = 12 in and 1 in = 2.54 cm
A.
3.54 × 104
B.
246
C.
5.49 × 103
D.
38.1
E.
11.1
Question #7
A room has dimensions of 10.0 ft × 20.0 ft × 8.00 ft. Given that there are three feet in a yard, what is the volume of the room in yd3?
A.
none of these
B.
59.3
C.
178
D.
1.60 × 103
E.
533
Question #8
A plastic block has dimensions of 2.2 cm × 3.0 cm × 1.5 cm and a mass of 12.4 grams. Will the block float in water and why?
A.
No, because the density of the block is 1.3 g/mL which is greater than the density of water.
B.
No, because the density of the block is 0.80 g/mL which is greater than the density of water.
C.
Yes, because the density of the block is 0.80 g/mL which is less than the density of water.
D.
none of these
E.
Yes, because the density of the block is 1.3 g/mL which is less than the density of water.
Question #9
Suppose a thermometer has marks at every one degree increment and the mercury level on the thermometer is exactly between the 25 and 26 degree Celsius marks. We should properly report the temperature measurement as:
A.
25.50°C
B.
25.55°C
C.
26°C
D.
25°C
E.
25.5°C
Question #10
A box has the following length, width, and height: 3.12 ft , 0.0455 yd and 7.87 inches. What is its volume in cubic centimeters? Conversion Factors 1 yd = 3 ft 1 ft = 12 inches 1 in = 2.54 cm
A.
18.3 cm3
B.
1.23 × 103 cm3
C.
4.83× 102 cm3
D.
4.11 ×103 cm3
E.
7.91× 103 cm3
Question #11
What is the price of 82 centigram of gold, if gold sells for $1,205 per ounce and has a density of 19.32 g/cm3? 1 L = 33.814 ounces and 1 cm3 = 1 mL.
A.
1.4
B.
1.7
C.
1.8
D.
1.6
E.
1.5
Question #12
How many milligrams are in 32 lbs?
A.
6.2×104 mg
B.
1.5 ×107 mg
C.
1.5 ×104 mg
D.
6.2 ×109 mg
Question #13
Acceleration due to gravity is 9.80665 m/s2. Convert this to ft/min2.
A.
7.15364 ×104 ft/min2
B.
1.15827 ×102 ft/min2
C.
2.47264 ×104 ft/min2
D.
1.15827 ×105 ft/min2
E.
7.15364 ×102 ft/min2
Question #14
A cyclist rides at an average speed of 24 mi/h. If he wants to bike 195 km, how long (in hours) must he ride?
A.
4.0 hours
B.
2.8 hours
C.
4.4 hours
D.
5.0 hours
Question #15
Exactly 2.8 mL of water leaks out of a faucet every 5.00 minutes. How many milliliters of water will have leaked out after 12.3 hours?
A.
0.41 mL
B.
4.1×103 mL
C.
4.1×102 mL
D.
2.2×102 mL
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