Question 1

The quantity 1.0857 qt rounded to two significant figures is ________ qt.

Accepted Answer

The answer of The quantity 1.0857 qt rounded to two...

Question 2

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

Accepted Answer

A) 1.15 × 10-7 cm 
B) 1.15 × 10-8 cm 
C) 1.15 × 1013 cm 
D) 1.15 × 1018 cm 
A) 1.15 × 10-7 cm 
B) 1.15 × 10-8 cm 
C) 1.15 × 1013 cm 
D) 1.15 × 1018 cm

Question 3

If 1.4% of the mass of a human body is calcium,how many kilograms of calcium are there in a 195-pound man?

Accepted Answer

A) 1.2 kg Ca 
B) 6.0 kg Ca 
C) 1.2 × 102 kg Ca 
D) 6.0 × 102 kg 
A) 1.2 kg Ca 
B) 6.0 kg Ca 
C) 1.2 × 102 kg Ca 
D) 6.0 × 102 kg

Question 4

How many significant figures are there in the answer for the following problem?   = ?

Accepted Answer

A) one 
B) two 
C) three 
D) four 
A) one 
B) two 
C) three 
D) four

Question 5

The winner of the men's 1500-meter speed skating event at a recent Winter Olympics had a time of 1:45.57.Assuming that the distance was measured accurately to five significant figures,what was the skater's average speed in miles per hour?

Accepted Answer

A) 31.790 mi/hr 
B) 38.418 mi/hr 
C) 51.151 mi/hr 
D) 61.826 mi/hr 
A) 31.790 mi/hr 
B) 38.418 mi/hr 
C) 51.151 mi/hr 
D) 61.826 mi/hr

Question 6

Because of the high heat and low humidity in the summer in Death Valley,California,a visitor requires about one quart of water for every two miles traveled on foot.Calculate the approximate number of liters required for a person to walk 15 kilometers in Death Valley.

Accepted Answer

A) 4.4 L 
B) 18 L 
C) 46 L 
D) 70 L 
A) 4.4 L 
B) 18 L 
C) 46 L 
D) 70 L

Question 7

The density of lead is 11.3 g/cm3.The volume occupied by 227 g of lead is ________ cm3.

Accepted Answer

Question 8

An astronaut uses a laboratory balance and weighs an object on earth and again on the moon.Which statement below about the weight and mass of the object is true?

Accepted Answer

A) The mass and weight will be identical on the earth and the moon. 
B) The mass will be the same on earth and moon but the weight will be less on the moon. 
C) The weight will be the same on earth and moon but the mass will be less on the moon. 
D) Both the mass and weight will be different on earth and moon. 
A) The mass and weight will be identical on the earth and the moon. 
B) The mass will be the same on earth and moon but the weight will be less on the moon. 
C) The weight will be the same on earth and moon but the mass will be less on the moon. 
D) Both the mass and weight will be different on earth and moon.

Question 9

An international group of zookeepers with successful breeding programs made the following animal exchanges last year.Using the same bartering system,how many oryxes can a zoo obtain in exchange for 15 flamingos? 3 oryxes = 1 tiger 2 flamingos = 1 anteater
1 camel = 6 anteaters 5 lemurs = 1 rhino
1 rhino = 4 monkeys 3 lemurs = 1 camel
3 monkeys = 1 tiger 1 rhino = 4 oryxes

Accepted Answer

A) one oryx 
B) three oryxes 
C) four oryxes 
D) five oryxes 
A) one oryx 
B) three oryxes 
C) four oryxes 
D) five oryxes

Question 10

Which one of the following statements about temperature scales is false?

Accepted Answer

A) The boiling point of water on the Fahrenheit scale is 212 degrees. 
B) The Celsius degree is smaller than the Fahrenheit degree. 
C) The freezing point of water on the Celsius scale is 0 degrees. 
D) All temperatures on the Kelvin scale are positive numbers. 
A) The boiling point of water on the Fahrenheit scale is 212 degrees. 
B) The Celsius degree is smaller than the Fahrenheit degree. 
C) The freezing point of water on the Celsius scale is 0 degrees. 
D) All temperatures on the Kelvin scale are positive numbers.

Question 11

Calculate the kinetic energy of a 150-g baseball moving at a speed of 40.m/s (89 mph).

Accepted Answer

A) 6.0 J 
B) 1.2 × 102 J 
C) 6.0 × 103 J 
D) 1.2 × 105 J 
A) 6.0 J 
B) 1.2 × 102 J 
C) 6.0 × 103 J 
D) 1.2 × 105 J

Question 12

An interpretation of the results of many tests is called

Accepted Answer

A) an experiment. 
B) a hypothesis. 
C) a prediction. 
D) a theory. 
A) an experiment. 
B) a hypothesis. 
C) a prediction. 
D) a theory.

Question 13

Which of the following is the greatest mass?

Accepted Answer

A) 10 μg 
B) 1.000 × 10-4 kg 
C) 1.000 × 10-2 cg 
D) 1.000 × 10-8 Mg 
A) 10 μg 
B) 1.000 × 10-4 kg 
C) 1.000 × 10-2 cg 
D) 1.000 × 10-8 Mg

Question 14

Calculate the kinetic energy of a 150-g baseball moving at a speed of 38.m/s (85 mph).

Accepted Answer

A) 5.7 J 
B) 1.1 × 102 J 
C) 5.7 × 103 J 
D) 1.1 × 105 J 
A) 5.7 J 
B) 1.1 × 102 J 
C) 5.7 × 103 J 
D) 1.1 × 105 J

Question 15

To the correct number of significant figures,what is the temperature reading on the following Celsius thermometer?

Accepted Answer

A) 21°C 
B) 21.7°C 
C) 21.70°C 
D) 22°C 
A) 21°C 
B) 21.7°C 
C) 21.70°C 
D) 22°C

Question 16

Convert 0.009723 to standard scientific notation.

Accepted Answer

A) 9.723 × 10-3 
B) 9723 × 10-6 
C) 9.723 × 103 
D) 9723 × 106 
A) 9.723 × 10-3 
B) 9723 × 10-6 
C) 9.723 × 103 
D) 9723 × 106

Question 17

A piece of metal ore weighs 7.25 g.When a student places it into a graduated cylinder containing water,the liquid level rises from 21.25 mL to 25.00 mL.What is the density of the ore?

Accepted Answer

A) 0.281 g/mL 
B) 0.141 g/mL 
C) 1.93 g/mL 
D) 3.21 g/mL 
A) 0.281 g/mL 
B) 0.141 g/mL 
C) 1.93 g/mL 
D) 3.21 g/mL

Question 18

Stored energy is ________ energy,and energy of motion is ________ energy.

Accepted Answer

The answer of Stored energy is ________ energy,and energy of...

Question 19

The density of aluminum is 2.702 g/cm3.What is the final liquid level of water if 1.130 ounces of aluminum is dropped into a graduated cylinder containing 15.90 mL of water?

Accepted Answer

A) 17.08 mL 
B) 21.66 mL 
C) 27.76 mL 
D) 47.95 mL 
A) 17.08 mL 
B) 21.66 mL 
C) 27.76 mL 
D) 47.95 mL

Question 20

Round off 00507506 to four significant figures.

Accepted Answer

A) 0051 
B) 5076 
C) 5100 
D) 5.075 × 105 
A) 0051 
B) 5076 
C) 5100 
D) 5.075 × 105

Exam 1: Chemical Tools: Experimentation and Measurement

The quantity 1.0857 qt rounded to two significant figures is ________ qt.

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

If 1.4% of the mass of a human body is calcium,how many kilograms of calcium are there in a 195-pound man?

How many significant figures are there in the answer for the following problem? = ?

The winner of the men's 1500-meter speed skating event at a recent Winter Olympics had a time of 1:45.57.Assuming that the distance was measured accurately to five significant figures,what was the skater's average speed in miles per hour?

Because of the high heat and low humidity in the summer in Death Valley,California,a visitor requires about one quart of water for every two miles traveled on foot.Calculate the approximate number of liters required for a person to walk 15 kilometers in Death Valley.

The density of lead is 11.3 g/cm3.The volume occupied by 227 g of lead is ________ cm3.

An astronaut uses a laboratory balance and weighs an object on earth and again on the moon.Which statement below about the weight and mass of the object is true?

Which one of the following statements about temperature scales is false?

Calculate the kinetic energy of a 150-g baseball moving at a speed of 40.m/s (89 mph).

An interpretation of the results of many tests is called

Which of the following is the greatest mass?

Calculate the kinetic energy of a 150-g baseball moving at a speed of 38.m/s (85 mph).

To the correct number of significant figures,what is the temperature reading on the following Celsius thermometer?

Convert 0.009723 to standard scientific notation.

A piece of metal ore weighs 7.25 g.When a student places it into a graduated cylinder containing water,the liquid level rises from 21.25 mL to 25.00 mL.What is the density of the ore?

Stored energy is ________ energy,and energy of motion is ________ energy.

The density of aluminum is 2.702 g/cm3.What is the final liquid level of water if 1.130 ounces of aluminum is dropped into a graduated cylinder containing 15.90 mL of water?

Round off 00507506 to four significant figures.

Atoms, molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Periodicity and the Electronic Structure of Atoms

Ionic Compounds: Periodic Trends and Bonding

Covalent Bonding and Electron-Dot Structures

Covalent Compounds: Bonding Theories and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids, solids, and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Nuclear Chemistry

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

The Main-Group Elements

Connections to Organic and Biological Chemistry

Filters

The density of lead is 11.3 g/cm³.The volume occupied by 227 g of lead is ________ cm³.

Stored energy is energy,and energy of motion is energy.

The density of aluminum is 2.702 g/cm³.What is the final liquid level of water if 1.130 ounces of aluminum is dropped into a graduated cylinder containing 15.90 mL of water?