Question :
31)Which of the following conversion factors would limit a calculation : 1309574
31)Which of the following conversion factors would limit a calculation to two significant figures?
a)
b)
c)
d)more than one correct response
e)no correct response
32)Density can be used as a conversion factor to convert from
a)mass to volume
b)volume to mass
c)metric unit mass to English unit mass
d)more than one correct response
e)no correct response
33)The density of table sugar is 1.59 g/mL. It is true that
a)2.00 g of table sugar occupies a volume of 1.17 mL.
b)3.00 g of table sugar occupies a volume of 1.97 mL.
c)5.00 g of table sugar occupies a volume of 3.14 mL.
d)More than one correct response
e)No correct response
34)Which of the following statements concerning the three major temperature scales is correct?
a)Kelvin temperatures are always positive.
b)The equation for converting from Celsius to Kelvin involves the number 273.
c)The freezing point of water has a lower numerical value on the Kelvin scale than on the Fahrenheit scale.
d)More than one correct response.
e)No correct response.
35)In which of the following pairs of temperature readings are the two members of the pair equivalent to each other?
a)32?F and 273 K
b)0?C and 373 K
c)0?C and 40?F
d)more than one correct response
e)no correct response
36)Statements:
(1) The meaning of a metric system prefix is independent of the base unit it modifies.
(2) “Trailing zeros” at the end of a measured number are never significant.
(3) The answer to the problem 105/10-3 is 102.
a)All three statements are true.
b)Two of the three statements are true.
c)Only one of the statements is true.
d)None of the statements is true.
37)Statements:
(1) In outer space, an astronaut may be weightless but never massless.
(2) The metric system prefixes milli and micro differ in mathematical meaning by a factor of 1000.
(3) The addition of 273 to a Fahrenheit temperature reading will convert it to a Kelvin temperature reading.
a)All three statements are true.
b)Two of the three statements are true.
c)Only one of the statements is true.
d)None of the statements is true.
38)Statements:
(1) The measured number 2.410 ? 10-3 contains three significant figures.
(2) The specific heat of water is higher than that of most other substances.
(3) The equation 1 kg = 106 mg is a correct mathematical statement.
a)All three statements are true.
b)Two of the three statements are true.
c)Only one of the statements is true.
d)None of the statements is true.
39)Statements:
(1) The answer to the addition problem 3.21 + 32 + 3.22 should have an uncertainty of hundredths.
(2) The measurement 653,899, when rounded to five significant figures, becomes 65,390.
(3) The higher the specific heat of a substance, the more its temperature will change when it absorbs a given amount of heat.
a)All three statements are true.
b)Two of the three statements are true.
c)Only one of the statements is true.
d)None of the statements is true.
40)Statements:
(1) The conversion factor 103 m/1 km contains an unlimited number of significant figures.
(2) Density may be used as a conversion factor to convert from mass to volume.
(3) The equation 2.33 lb = 625 g is a correct mathematical statement.
a)All three statements are true.
b)Two of the three statements are true.
c)Only one of the statements is true.
d)None of the statements is true.
41)Statements:
(1) A deciliter is equal to 100 milliliters.
(2) The Kelvin temperature scale is closely related mathematically to the Celsius temperature scale.
(3) Measurements cannot be exact because two estimated digits are always recorded as part of any measurement.
a)All three statements are true.
b)Two of the three statements are true.
c)Only one of the statements is true.
d)None of the statements is true.
42)Statements:
(1) The answer to the calculation 12.00 ? (6.00 ? 1023) should contain three significant figures.
(2) A meter is slightly larger than a yard, and a liter is slightly larger than a quart.
(3) The numbers 3.30 ? 10-1 and 3.30 ? 101 both have a magnitude of less than one.
a)All three statements are true.
b)Two of the three statements are true.
c)Only one of the statements is true.
d)None of the statements is true.
43)Statements:
(1) The size of the degree is the same on the Fahrenheit and Celsius temperature scales.
(2) The measurement 62,300 has an uncertainty of ? 100.
(3) The answer to the calculation 8.45 + 10.40 should contain four significant figures.
a)All three statements are true.
b)Two of the three statements are true.
c)Only one of the statements is true.
d)None of the statements is true.
44)Statements:
(1) The measured numbers 244,000 and 0.000244 contain the same number of significant figures.
(2) One cubic centimeter is equal to ten milliliters.
(3) The conversion factor 1 in/2.54 cm, when used as written, would decrease unit size.
a)All three statements are true.
b)Two of the three statements are true.
c)Only one of the statements is true.
d)None of the statements is true.
