Exam 1: Units of Measurement for Physical and Chemical Change

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If a car gets 43.0 miles per gallon (mpg) fuel efficiency, calculate the fuel efficiency in litres per 100 km. (1 US gal = 3.78541 L; 1 mile = 1609.34 m)

(Multiple Choice)

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Question 141

A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean. Each barrel contains 42 gallons. If the oil film on the ocean is 2.5 × 10² nm thick, how many square metres will the oil slick cover?

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Question 142

Describe the difference between an intensive and extensive property using examples.

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Question 143

Molecules can be described as ________.

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Question 144

What is the correct answer, with the proper number of significant figures, for the following calculation? 11.5 × 8.78

(Short Answer)

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Question 145

A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.71 g mL^-1, 1.73 g mL^-1, 1.67 g mL^-1, 1.69 g mL^-1. If the actual value for the density of the sugar solution is 1.40 g mL^-1, which statement below best describes her results?

(Multiple Choice)

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Question 146

________ is the energy associated with the position or composition of an object.

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Question 147

What answer should be reported, with the correct number of significant figures, for the following calculation?

(Multiple Choice)

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Question 148

If the speed limit is 40 miles per hour, calculate the speed limit in kilometres per hour. (1 km = 0.6214 miles)

(Multiple Choice)

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Question 149

Gasoline is sold for $1.399 per litre in Toronto. Your car needs 12.00 gallons. How much will your credit card be charged in Canadian dollars?

(Multiple Choice)

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Question 150

The melting point of copper is 1984 °F. What is the melting point in K?

(Multiple Choice)

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Question 151

Which of the following is an example of physical change?

(Multiple Choice)

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Question 152

Crude oil is an example of ________.

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Question 153

What answer should be reported, with the correct number of significant figures, for the following calculation? 3.000 × 10⁵ + 614283

(Multiple Choice)

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Question 154

Read the water level with the correct number of significant figures.

(Multiple Choice)

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Question 155

A sample of liquid isopropyl alcohol is placed in a sealed container. Some of the volatile isopropyl alcohol vaporizes. Does the mass of the sealed container and its contents change during the vaporization? Explain.

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Question 156

Choose the element from the list below.

(Multiple Choice)

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Question 157

The diameter of an atom is approximately 1 × 10^-10 m. What is the diameter in millimeters?

(Multiple Choice)

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Question 158

How many mL are in 2.54 L?

(Multiple Choice)

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Question 159

Which of the following is an example of extensive properties?

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Question 160

Showing 141 - 160 of 192

Exam 1: Units of Measurement for Physical and Chemical Change

If a car gets 43.0 miles per gallon (mpg) fuel efficiency, calculate the fuel efficiency in litres per 100 km. (1 US gal = 3.78541 L; 1 mile = 1609.34 m)

A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean. Each barrel contains 42 gallons. If the oil film on the ocean is 2.5 × 102 nm thick, how many square metres will the oil slick cover?

Describe the difference between an intensive and extensive property using examples.

Molecules can be described as ________.

What is the correct answer, with the proper number of significant figures, for the following calculation? 11.5 × 8.78

A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.71 g mL-1, 1.73 g mL-1, 1.67 g mL-1, 1.69 g mL-1. If the actual value for the density of the sugar solution is 1.40 g mL-1, which statement below best describes her results?

________ is the energy associated with the position or composition of an object.

What answer should be reported, with the correct number of significant figures, for the following calculation?

If the speed limit is 40 miles per hour, calculate the speed limit in kilometres per hour. (1 km = 0.6214 miles)

Gasoline is sold for $1.399 per litre in Toronto. Your car needs 12.00 gallons. How much will your credit card be charged in Canadian dollars?

The melting point of copper is 1984 °F. What is the melting point in K?

Which of the following is an example of physical change?

Crude oil is an example of ________.

What answer should be reported, with the correct number of significant figures, for the following calculation? 3.000 × 105 + 614283

Read the water level with the correct number of significant figures.

A sample of liquid isopropyl alcohol is placed in a sealed container. Some of the volatile isopropyl alcohol vaporizes. Does the mass of the sealed container and its contents change during the vaporization? Explain.

Choose the element from the list below.

The diameter of an atom is approximately 1 × 10-10 m. What is the diameter in millimeters?

How many mL are in 2.54 L?

Which of the following is an example of extensive properties?

Atoms and Elements

Molecules, Compounds, and Nomenclature

Chemical Reactions and Stoichiometry

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes, Valence Bond Theory, and Molecular Orbital Theory

Liquids, Solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry Ii: Reactions

Biochemistry

Chemistry of the Nonmetals

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

A fishing boat accidentally spills 3.0 barrels of diesel oil into the ocean. Each barrel contains 42 gallons. If the oil film on the ocean is 2.5 × 10² nm thick, how many square metres will the oil slick cover?

A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 1.71 g mL^-1, 1.73 g mL^-1, 1.67 g mL^-1, 1.69 g mL^-1. If the actual value for the density of the sugar solution is 1.40 g mL^-1, which statement below best describes her results?

What answer should be reported, with the correct number of significant figures, for the following calculation? 3.000 × 10⁵ + 614283

The diameter of an atom is approximately 1 × 10^-10 m. What is the diameter in millimeters?