3326910
Pregunta 1
Pregunta
Which of these is not correct?
Respuesta
-
100 cm = 1 m
-
1000 mL = 1L
-
1 mL = 1 cm^3
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10 kg = 1 g
Pregunta 2
Pregunta
How many significant figures are in the measurement 2103.20 g?
Respuesta
-
2
-
4
-
5
-
6
Pregunta 3
Pregunta
How many significant figures in the measurement 0.040200 m?
Respuesta
-
3
-
5
-
6
-
7
Pregunta 4
Pregunta
How many grams are in 2.5 kg?
Respuesta
-
0.0025
-
25
-
250
-
2500
Pregunta 5
Pregunta
Which is the SI (metric) unit for volume?
Respuesta
-
L
-
g
-
K
-
mg
Pregunta 6
Pregunta
How many seconds are in a 40-hr workweek?
Respuesta
-
1.4 x 10^5 s
-
3600 s
-
14400 s
-
3.6 x 10^5 s
Pregunta 7
Pregunta
Your car gets 35 miles per gallon. How many km per liter does that equal?
(1.61km = 1 mile) and (1L = 0.264 gallons)
Respuesta
-
17 km/L
-
15 km/L
-
6.4 km/L
-
244 km/L
Pregunta 8
Pregunta
Closeness of a measurement to its true value is a measure of its:
Respuesta
-
usefulness
-
reproducability
-
precision
-
accuracy
Pregunta 9
Pregunta
Which sets of measurements is the most precise?
Respuesta
-
1, 3, 2
-
10.5, 11.0, 11.5
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12, 15, 10
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120, 121, 122
Pregunta 10
Pregunta
What is the volume of 60.0g of ether if its density is 0.70 g/mL?
Respuesta
-
86 mL
-
0.012 mL
-
42 mL
-
0.024 mL
Pregunta 11
Pregunta
Some liquid has a density of 1.19 g/mL. What is the mass of 2.0L of this liquid?
Respuesta
-
2380 g
-
0.000420 g
-
0.595 g
-
2.38 g
Pregunta 12
Pregunta
A student measures a volume of 25 mL, whereas the correct volume is 23 mL. What is the percent error?
Respuesta
-
0.087%
-
8.0%
-
8.7%
-
0.92%
Pregunta 13
Pregunta
What is the area of a piece of metal that measures 4.15 cm x 1.8 cm?
Use significant figures.
Respuesta
-
7.47 cm^2
-
7.5 cm
-
7.5 cm^2
-
7.47 cm
Pregunta 14
Pregunta
What is the area of a substance that measures (1.7 x 10^-5 m) x (3.72 x 10^-4 m)
Use proper significant figures
Respuesta
-
6.324 x 10^-9 m2
-
6.32 x 10^-9 m2
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6.324 x 10^-1 m2
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6.3 x 10^-9 m2
Pregunta 15
Pregunta
How many cm^3 are in 1 m^3 ?
Respuesta
-
10^3
-
100
-
10^6
-
10^9
Pregunta 16
Pregunta
A box measures 0.50 m x 0.50 m x 0.50 m. What is the volume (L) of the box?
Respuesta
-
0.125 L
-
12.5 L
-
125 L
-
1250 L
Pregunta 17
Pregunta
What is the lowest point on the Kelvin scale?
Respuesta
-
100
-
0
-
-273
-
273
Pregunta 18
Pregunta
Convert 378 Kelvin into Celsius.
Respuesta
-
651 C
-
105 C
-
378 C
Pregunta 19
Pregunta
Convert 378 Celsius into Kelvin.
Respuesta
-
651 C
-
105 C
-
378 C
Pregunta 20
Pregunta
Which is the correct scientific notation for 0.000864
Respuesta
-
86.4 x 10^-5
-
86.4 x 10^-4
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8.64 x 10^-5
-
8.64 x 10^-4
Pregunta 21
Pregunta
What is this number, 8.675 x 10^5 in standard form?
Round to two significant figures
Respuesta
-
870000
-
867500
-
0.000087
-
0.0000867
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