The joule is the SI unit of energy and is equal to 1 kg m2 s-2. The erg is another energy unit, equal to 1 g cm2 s-2. Use unit conversion methods to work out how many ergs are in 1 joule.

A) 10-1 ergs B) 10 ergs C) 102 ergs D) 105 ergs E) 107 ergs A) 10-1 ergs B) 10 ergs C) 102 ergs D) 105 ergs E) 107 ergs

Bud N. Chemist must determine the density of a mineral sample. His four trials yield densities of 4.77 g/cm3, 4.67 g/cm3, 4.69 g/cm3, and 4.81 g/cm3. Independent studies found the correct density to be 4.75 g/cm3. Which of the following statements represents the best analysis of the data?

A) Bud's results have much greater accuracy than precision. B) Bud's results have much greater precision than accuracy. C) Bud's results have high accuracy and high precision. D) Bud's results have low accuracy and low precision. E) Bud's equipment is faulty. A) Bud's results have much greater accuracy than precision. B) Bud's results have much greater precision than accuracy. C) Bud's results have high accuracy and high precision. D) Bud's results have low accuracy and low precision. E) Bud's equipment is faulty.

As chief chemist at Superior Analytical Products (SAP) you must design an experiment to determine the density of an unknown liquid to three (3) significant figures. The density is of the order of 1 g/cm3. You have approximately 7 mL of the liquid and only graduated cylinders and balances are available for your use. Which of the following combinations of equipment will allow you to meet but not exceed your goal?

A) graduated cylinder with ±0.1 mL uncertainty; balance with ±0.1 g uncertainty B) graduated cylinder with ±0.01 mL uncertainty; balance with ±0.1 g uncertainty C) graduated cylinder with ±0.01 mL uncertainty; balance with ±0.01 g uncertainty D) graduated cylinder with ±0.001 mL uncertainty; balance with ±0.001 g uncertainty E) graduated cylinder with ±0.1 mL uncertainty; balance with ±0.001 g uncertainty A) graduated cylinder with ±0.1 mL uncertainty; balance with ±0.1 g uncertainty B) graduated cylinder with ±0.01 mL uncertainty; balance with ±0.1 g uncertainty C) graduated cylinder with ±0.01 mL uncertainty; balance with ±0.01 g uncertainty D) graduated cylinder with ±0.001 mL uncertainty; balance with ±0.001 g uncertainty E) graduated cylinder with ±0.1 mL uncertainty; balance with ±0.001 g uncertainty

The area of a 15-inch pizza is 176.7 in2. Express this area in square centimeters.

A) 1140. cm2 B) 448.8 cm2 C) 96.8 cm2 D) 69.57 cm2 E) 27.39 cm2 A) 1140. cm2 B) 448.8 cm2 C) 96.8 cm2 D) 69.57 cm2 E) 27.39 cm2

Given that 1 inch = 2.54 cm, 1 cm3 is equal to

A) 16.4 in3. B) 6.45 in3. C) 0.394 in3. D) 0.155 in3. E) 0.0610 in3. A) 16.4 in3. B) 6.45 in3. C) 0.394 in3. D) 0.155 in3. E) 0.0610 in3.

Exam 1: Keys to Studying Chemistry Definitions, Units, and Problem Solving

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The numerical value of any temperature expressed in Celsius is always different from the numerical value of the same temperature in kelvin.

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(True/False)

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Question 1

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You prepare 1000. mL of tea and transfer it to a 1.00-quart pitcher for storage. Which of the following statements is true?

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Question 2

Correct Answer:

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Select the answer that expresses the result of this calculation with the correct number of significant figures and with correct units. 16.18 cm × 9.6114 g ÷ 1.4783 cm² =

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Question 3

Correct Answer:

Verified

Which of the following correctly shows how to convert a density of 20.1 g cm^-3 to units of kg m^-3?

(Multiple Choice)

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Question 4

The number 6.0448, rounded to 3 decimal places, becomes 6.045.

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Question 5

Which of the following abbreviations of the given SI base unit is incorrect?

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Question 6

Which of the following processes and concepts is not a part of the "scientific method"?

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Question 7

Which one of the following is a "substance" in the sense of the word as used in your textbook?

(Multiple Choice)

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Question 8

A dose of medication was prescribed to be 35 microliters. Which of the following expresses that volume in centiliters?

(Multiple Choice)

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Question 9

Which one of the following numbers contains a digit or digits which is/are not significant?

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Question 10

Water vapor is less dense than ice because

(Multiple Choice)

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Question 11

The difference between a student's experimental measurement of the density of sodium chloride and the known density of this compound reflects the ___________ of the student's result.

(Multiple Choice)

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Question 12

The joule is the SI unit of energy and is equal to 1 kg m² s^-2. The erg is another energy unit, equal to 1 g cm² s^-2. Use unit conversion methods to work out how many ergs are in 1 joule.

(Multiple Choice)

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Question 13

When a wooden match burns in air, chemical potential energy is converted to kinetic energy.

(True/False)

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Question 14

Bud N. Chemist must determine the density of a mineral sample. His four trials yield densities of 4.77 g/cm³, 4.67 g/cm³, 4.69 g/cm³, and 4.81 g/cm³. Independent studies found the correct density to be 4.75 g/cm³. Which of the following statements represents the best analysis of the data?

(Multiple Choice)

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Question 15

The SI prefix mega- (M) means

(Multiple Choice)

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Question 16

As chief chemist at Superior Analytical Products (SAP) you must design an experiment to determine the density of an unknown liquid to three (3) significant figures. The density is of the order of 1 g/cm³. You have approximately 7 mL of the liquid and only graduated cylinders and balances are available for your use. Which of the following combinations of equipment will allow you to meet but not exceed your goal?

(Multiple Choice)

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(36)

Question 17

The area of a 15-inch pizza is 176.7 in². Express this area in square centimeters.

(Multiple Choice)

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Question 18

An important aim in much chemical work is to use macroscopic measurements in order to gain an understanding of the microscopic world.

(True/False)

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Question 19

Given that 1 inch = 2.54 cm, 1 cm³ is equal to

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Question 20

Showing 1 - 20 of 71

Exam 1: Keys to Studying Chemistry Definitions, Units, and Problem Solving

The numerical value of any temperature expressed in Celsius is always different from the numerical value of the same temperature in kelvin.

You prepare 1000. mL of tea and transfer it to a 1.00-quart pitcher for storage. Which of the following statements is true?

Select the answer that expresses the result of this calculation with the correct number of significant figures and with correct units. 16.18 cm × 9.6114 g ÷ 1.4783 cm2 =

Which of the following correctly shows how to convert a density of 20.1 g cm-3 to units of kg m-3?

The number 6.0448, rounded to 3 decimal places, becomes 6.045.

Which of the following abbreviations of the given SI base unit is incorrect?

Which of the following processes and concepts is not a part of the "scientific method"?

Which one of the following is a "substance" in the sense of the word as used in your textbook?

A dose of medication was prescribed to be 35 microliters. Which of the following expresses that volume in centiliters?

Which one of the following numbers contains a digit or digits which is/are not significant?

Water vapor is less dense than ice because

The difference between a student's experimental measurement of the density of sodium chloride and the known density of this compound reflects the ___________ of the student's result.

The joule is the SI unit of energy and is equal to 1 kg m2 s-2. The erg is another energy unit, equal to 1 g cm2 s-2. Use unit conversion methods to work out how many ergs are in 1 joule.

When a wooden match burns in air, chemical potential energy is converted to kinetic energy.

Bud N. Chemist must determine the density of a mineral sample. His four trials yield densities of 4.77 g/cm3, 4.67 g/cm3, 4.69 g/cm3, and 4.81 g/cm3. Independent studies found the correct density to be 4.75 g/cm3. Which of the following statements represents the best analysis of the data?

The SI prefix mega- (M) means

The area of a 15-inch pizza is 176.7 in2. Express this area in square centimeters.

An important aim in much chemical work is to use macroscopic measurements in order to gain an understanding of the microscopic world.

Given that 1 inch = 2.54 cm, 1 cm3 is equal to

The Components of Matter

Stoichiometry of Formulas and Equations

Three Major Classes of Chemical Reactions

Gases and the Kinetic-Molecular Theory

Thermochemistry Energy Flow and Chemical Change

Quantum Theory and Atomic Structure

Electron Configuration and Chemical Periodicity

Models of Chemical Bonding

The Shapes of Molecules

Theories of Covalent Bonding

Intermolecular Forces Liquids, Solids, and Phase Changes

The Properties of Mixtures Solutions and Colloids

Periodic Patterns in the Main-Group Elements

Organic Compounds and the Atomic Properties of Carbon

Kinetics Rates and Mechanisms of Chemical Reactions

Equilibrium the Extent of Chemical Reactions

Acid-Base Equilibria

Ionic Equilibria in Aqueous Systems

Thermodynamics Entropy, Free Energy, and Reaction Direction

Electrochemistry Chemical Change and Electrical Work

The Elements in Nature and Industry

Transition Elements and Their Coordination Compounds

Nuclear Reactions and Their Applications

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Select the answer that expresses the result of this calculation with the correct number of significant figures and with correct units. 16.18 cm × 9.6114 g ÷ 1.4783 cm² =

Which of the following correctly shows how to convert a density of 20.1 g cm^-3 to units of kg m^-3?

The joule is the SI unit of energy and is equal to 1 kg m² s^-2. The erg is another energy unit, equal to 1 g cm² s^-2. Use unit conversion methods to work out how many ergs are in 1 joule.

Bud N. Chemist must determine the density of a mineral sample. His four trials yield densities of 4.77 g/cm³, 4.67 g/cm³, 4.69 g/cm³, and 4.81 g/cm³. Independent studies found the correct density to be 4.75 g/cm³. Which of the following statements represents the best analysis of the data?

The area of a 15-inch pizza is 176.7 in². Express this area in square centimeters.

Given that 1 inch = 2.54 cm, 1 cm³ is equal to