Exam 1: Chemistry: the Study of Change

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You just measured a metal cylinder and obtained the following information: mass = 3.543 g diameter = 0.53 cm height = 4.4 cm Determine the volume (V)and density of the cylinder.(V= $\pi$ r² h, where r = radius, h = height, $\pi$ = 3.14)

(Essay)

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Question 41

How many square kilometers are equivalent to 28.5 cm²?

(Multiple Choice)

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Question 42

Give the correct number of significant figures and units to the problem below. 56 mm + 4.5 m =

(Multiple Choice)

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Question 43

Give the correct number of significant figures to the problem below. 5.80 x 10^-1 - 3.4 x 10^-2 =

(Multiple Choice)

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Question 44

Express 7,500 nm as picometers.

(Multiple Choice)

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Question 45

Classify the following as a physical or chemical change: Alcohol evaporates.

(Short Answer)

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Question 46

After carrying out the following operations, how many significant figures are appropriate to show in the result? (13.7 + 0.027)÷ 8.221

(Multiple Choice)

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Question 47

If the price of gasoline is $3.85 per U.S.gallon, what is the cost per liter? (1 L = 1.06 qt)

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Question 48

The mass of a body varies according to the force of gravity exerted on the body.

(True/False)

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Question 49

What will be the cost of gasoline for a 3,700-mile trip in a car that gets 23 miles per gallon, if the average price of gas is $3.90 per gallon?

(Short Answer)

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Question 50

Give three examples of mixtures.

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Question 51

Classify the following as an element, a compound, or a mixture: Oxygen gas.

(Short Answer)

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Question 52

Classify the following as an intensive or an extensive property: mass

(True/False)

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Question 53

Give the correct number of significant figures and units to the problem below 5.46 m³/ 2.01 m²=

(Multiple Choice)

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Question 54

A particular flask has a mass of 17.4916 g when empty.When filled with ordinary water at 20.0°C (density = 0.9982 g/mL), the mass of the flask is now 43.9616 g.The density of so-called "heavy water" at 20.0°C is 1.1053 g/mL.What will the mass of the flask be when filled with heavy water at 20.0°C?

(Multiple Choice)

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Question 55

The SI prefixes micro and milli represent, respectively:

(Multiple Choice)

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Question 56

A tentative explanation for a set of observations that can be tested by further experimentation is referred to as

(Multiple Choice)

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Question 57

The recommended daily allowance (RDA)of calcium is 1.2 g.Calcium carbonate contains 12.0% calcium by mass.How many grams of calcium carbonate are needed to provide the RDA of calcium?

(Multiple Choice)

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Question 58

A person weighs 150.0 lb, and the correct dosage of a drug is given as 1.50 mg per kilogram of body weight.How many milligrams of the drug should be given? (2.20 lb = 1 kg)

(Short Answer)

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Question 59

What is the density of a salt solution if 75.0 mL of the solution has a mass of 32.0 g?

(Short Answer)

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Question 60

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Exam 1: Chemistry: the Study of Change

You just measured a metal cylinder and obtained the following information: mass = 3.543 g diameter = 0.53 cm height = 4.4 cm Determine the volume (V)and density of the cylinder.(V= π\piπ r2 h, where r = radius, h = height, π\piπ = 3.14)

How many square kilometers are equivalent to 28.5 cm2?

Give the correct number of significant figures and units to the problem below. 56 mm + 4.5 m =

Give the correct number of significant figures to the problem below. 5.80 x 10-1 - 3.4 x 10-2 =

Express 7,500 nm as picometers.

Classify the following as a physical or chemical change: Alcohol evaporates.

After carrying out the following operations, how many significant figures are appropriate to show in the result? (13.7 + 0.027)÷ 8.221

If the price of gasoline is $3.85 per U.S.gallon, what is the cost per liter? (1 L = 1.06 qt)

The mass of a body varies according to the force of gravity exerted on the body.

What will be the cost of gasoline for a 3,700-mile trip in a car that gets 23 miles per gallon, if the average price of gas is $3.90 per gallon?

Give three examples of mixtures.

Classify the following as an element, a compound, or a mixture: Oxygen gas.

Classify the following as an intensive or an extensive property: mass

Give the correct number of significant figures and units to the problem below 5.46 m3/ 2.01 m2 =

The SI prefixes micro and milli represent, respectively:

A tentative explanation for a set of observations that can be tested by further experimentation is referred to as

The recommended daily allowance (RDA)of calcium is 1.2 g.Calcium carbonate contains 12.0% calcium by mass.How many grams of calcium carbonate are needed to provide the RDA of calcium?

A person weighs 150.0 lb, and the correct dosage of a drug is given as 1.50 mg per kilogram of body weight.How many milligrams of the drug should be given? (2.20 lb = 1 kg)

What is the density of a salt solution if 75.0 mL of the solution has a mass of 32.0 g?

Atoms, Molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

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You just measured a metal cylinder and obtained the following information: mass = 3.543 g diameter = 0.53 cm height = 4.4 cm Determine the volume (V)and density of the cylinder.(V= $\pi$ r² h, where r = radius, h = height, $\pi$ = 3.14)

How many square kilometers are equivalent to 28.5 cm²?

Give the correct number of significant figures to the problem below. 5.80 x 10^-1 - 3.4 x 10^-2 =

Give the correct number of significant figures and units to the problem below 5.46 m³/ 2.01 m²=