Question 1

What answer should be reported,with the correct number of significant figures,for the following calculation?  10−3.8214e−5.513\frac { 10 - 3.8214 } { e ^ { - 5.513 } }e−5.51310−3.8214​

Accepted Answer

A)  0.037
B)  0.0374
C)  0.03740
D)  0.037399
E)  0.0373995 F) A) and E)
G) A) and C)

Question 2

Determine the mass of an object that has a volume of 88.6 mL and a density of 9.77 g mL-1.

Accepted Answer

A)  298 g
B)  1100 g
C)  907 g
D)  568 g
E)  866 gF) B) and E)
G) C) and D)

Question 3

How many litres of wine can be held in a wine barrel whose capacity is 22.0 gal?  (1gal=4qt=3.7854 L) ( 1 \mathrm { gal } = 4 \mathrm { qt } = 3.7854 \mathrm {~L} ) (1gal=4qt=3.7854 L)

Accepted Answer

A)  1.72 ×  10−410 ^ { - 4 }10−4 
B)  0.172
C)  83.3
D)  5.81 ×  10310 ^ { 3 }103 
E)  5.81 F) A) and E)
G) B) and D)

Question 4

Metre is a measure of

Accepted Answer

A)  mass.
B)  time.
C)  temperature.
D)  length.
E)  volume.F) A) and D)
G) None of the above

Question 5

Round the following number to four significant figures and express the result in standard exponential notation: 229.613

Accepted Answer

A)  2.296 × 102
B)  22.96 × 10-1
C)  2.296 × 10-2
D)  0.2296 × 103
E)  229.6F) B) and D)
G) B) and C)

Question 6

Two or more substances in variable proportions,where the composition is constant throughout,are

Accepted Answer

A)  a compound.
B)  an element.
C)  a heterogeneous mixture.
D)  a homogeneous mixture.
E)  a crystalline solid.F) A) and D)
G) B) and D)

Question 7

If a person buys a 1.00 US gallon jug of milk,how much milk does he have in L? (1 US gallon = 4 US quarts; 1 US quart = 2 US pints; 1 US pint = 0.473176 L.)

Accepted Answer

A)  4.00 L
B)  3.79 L
C)  4.55 L
D)  3.50 L
E)  2.00 LF) A) and B)
G) B) and D)

Question 8

Ethanol has a freezing point of 159 K.What is the freezing point in °C?

Accepted Answer

A)  -81 °C
B)  -78 °C
C)  -62 °C
D)  -114 °C
E)  -195 °CF) None of the above
G) C) and D)

Question 9

A recipe requires 1.89 litres of milk for a soup base.How many quarts are needed?

Accepted Answer

A)  1.79 qts
B)  2.00 qts
C)  1.89 qts
D)  2.10 qts
E)  2.15 qtsF) A) and E)
G) C) and D)

Question 10

Convert 1.34 km2 to m2.

Accepted Answer

A)  1340000 m2
B)  134000 m2
C)  1.34 × 107 m2
D)  1.34 × 104 m2
E)  1340 m2F) A) and D)
G) C) and D)

Question 11

Define matter.

Accepted Answer

Matter is anything t...

Question 12

What answer should be reported,with the correct number of significant figures,for the following calculation? 
log(4.28 × 103) - 1

Accepted Answer

A)  2.63144
B)  2.6314
C)  2.631
D)  2.6
E)  3F) C) and D)
G) None of the above

Question 13

If a solution has a temperature of 355 K,what is its temperature in degrees Celsius?

Accepted Answer

A)  165 °C
B)  628 °C
C)  179 °C
D)  279 °C
E)  82 °CF) A) and D)
G) A) and E)

Question 14

What answer should be reported,with the correct number of significant figures,for the following calculation? 
(965.43 × 3.911) + 9413.4136

Accepted Answer

A)  13189
B)  13189.2
C)  1.32 × 104
D)  1.3 × 104
E)  1.319 × 104F) B) and E)
G) None of the above

Question 15

Choose the element from the list below.

Accepted Answer

A)  sodium chloride
B)  water
C)  carbon dioxide
D)  helium
E)  rustF) B) and D)
G) C) and D)

Question 16

The average distance between nitrogen and oxygen atoms is 115 pm in a compound called nitric oxide.What is this distance in millimeters?

Accepted Answer

A)  1.15 × 10-8 mm
B)  1.15 × 10-7 mm
C)  1.15 × 1013 mm
D)  1.15 × 1017 mmE) B) and D)
F) B) and C)

Question 17

Determine the density of an object that has a mass of 149.8 g and displaces 12.1 mL of water when placed in a graduated cylinder.

Accepted Answer

A)  8.08 g mL-1
B)  1.38 g mL-1
C)  12 .4 g mL-1
D)  18.1 g mL-1
E)  11.4 g mL-1F) A) and E)
G) B) and E)

Question 18

How many mL are in 2.54 L?

Accepted Answer

A)  2.54 × 10-3 mL
B)  2.54 × 101 mL
C)  2.54 × 103 mL
D)  2.54 × 10-1 mL
E)  2.54 × 102 mLF) A) and E)
G) All of the above

Question 19

What symbol is used to represent the factor 101?

Accepted Answer

A)  M
B)  da
C)  μ
D)  nE) All of the above
F) A) and C)

Question 20

Choose the homogeneous mixture from the list below.

Accepted Answer

A)  chicken noodle soup
B)  air
C)  concrete
D)  trail mix
E)  bloodF) A) and B)
G) A) and C)

Exam 1: Units of Measurement for Physical and Chemical Change

Choose the homogeneous mixture from the list below.

Correct AnswerverifiedShow Answer

What symbol is used to represent the factor 101?

Correct AnswerverifiedShow Answer

If a person buys a 1.00 US gallon jug of milk,how much milk does he have in L? (1 US gallon = 4 US quarts; 1 US quart = 2 US pints; 1 US pint = 0.473176 L.)

Correct AnswerverifiedShow Answer

Metre is a measure of

Correct AnswerverifiedShow Answer

Choose the element from the list below.

Correct AnswerverifiedShow Answer

A recipe requires 1.89 litres of milk for a soup base.How many quarts are needed?

Correct AnswerverifiedShow Answer

What answer should be reported,with the correct number of significant figures,for the following calculation? log(4.28 × 103) - 1

Correct AnswerverifiedShow Answer

Define matter.

Correct AnswerverifiedMatter is anything t...View AnswerShow Answer

What answer should be reported,with the correct number of significant figures,for the following calculation? (965.43 × 3.911) + 9413.4136

Correct AnswerverifiedShow Answer

Determine the density of an object that has a mass of 149.8 g and displaces 12.1 mL of water when placed in a graduated cylinder.

Correct AnswerverifiedShow Answer

Round the following number to four significant figures and express the result in standard exponential notation: 229.613

Correct AnswerverifiedShow Answer

Two or more substances in variable proportions,where the composition is constant throughout,are

Correct AnswerverifiedShow Answer

How many mL are in 2.54 L?

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How many litres of wine can be held in a wine barrel whose capacity is 22.0 gal? (1gal=4qt=3.7854 L) ( 1 \mathrm { gal } = 4 \mathrm { qt } = 3.7854 \mathrm {~L} ) (1gal=4qt=3.7854 L)

Correct AnswerverifiedShow Answer

Determine the mass of an object that has a volume of 88.6 mL and a density of 9.77 g mL-1.

Correct AnswerverifiedShow Answer

The average distance between nitrogen and oxygen atoms is 115 pm in a compound called nitric oxide.What is this distance in millimeters?

Correct AnswerverifiedShow Answer

If a solution has a temperature of 355 K,what is its temperature in degrees Celsius?

Correct AnswerverifiedShow Answer

What answer should be reported,with the correct number of significant figures,for the following calculation? 10−3.8214e−5.513\frac { 10 - 3.8214 } { e ^ { - 5.513 } }e−5.51310−3.8214​

Correct AnswerverifiedShow Answer

Convert 1.34 km2 to m2.

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Ethanol has a freezing point of 159 K.What is the freezing point in °C?

Correct AnswerverifiedShow Answer

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What symbol is used to represent the factor 10¹?

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What answer should be reported,with the correct number of significant figures,for the following calculation? log(4.28 × 10³) - 1

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Matter is anything t...
View Answer

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How many litres of wine can be held in a wine barrel whose capacity is 22.0 gal? $( 1 \mathrm { gal } = 4 \mathrm { qt } = 3.7854 \mathrm {~L} )$

Correct Answer
verified

Determine the mass of an object that has a volume of 88.6 mL and a density of 9.77 g mL^-1.

Correct Answer
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Correct Answer
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Correct Answer
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What answer should be reported,with the correct number of significant figures,for the following calculation? $\frac { 10 - 3.8214 } { e ^ { - 5.513 } }$

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Convert 1.34 km² to m².

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Correct Answer
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