Question 1

The temperature in the laboratory is posted as 295 K.What is this temperature in degrees Celsius?

Accepted Answer

A) 22 °C 
B) -22 °C 
C) 568 °C 
D) -568 °C 
E) 563 °C 
A) 22 °C 
B) -22 °C 
C) 568 °C 
D) -568 °C 
E) 563 °C

Question 2

Consider that   .If 1559 cm is converted to inches,how many significant figures should be in the answer?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
E) 5 
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Question 3

Complete the following operation: 8.36 × 106 + 1.320 × 107

Accepted Answer

A) 8.492 × 107 
B) 8.492 × 108 
C) 9.68 × 1013 
D) 2.156 × 108 
E) 2.156 × 107 
A) 8.492 × 107 
B) 8.492 × 108 
C) 9.68 × 1013 
D) 2.156 × 108 
E) 2.156 × 107

Question 4

How many significant figures are in each of the following quantities?
i. 0.00062 kg
ii. 0.720 in.
iii. 4.150 × 103 lb
iv. 0.305 m3

Accepted Answer

A)  i. 2 ii. 2 iii. 3 iv. 3 
B)  i. 2 ii. 2 iii. 4 iv. 3 
C)  i. 5 ii. 3 iii. 4 iv. 3 
D)  i. 2 ii. 3 iii. 4 iv. 3. 
E)  i. 5 ii. 3 iii. 4 iv. 3. 
A)  i. 2 ii. 2 iii. 3 iv. 3 
B)  i. 2 ii. 2 iii. 4 iv. 3 
C)  i. 5 ii. 3 iii. 4 iv. 3 
D)  i. 2 ii. 3 iii. 4 iv. 3. 
E)  i. 5 ii. 3 iii. 4 iv. 3.

Question 5

Faraday's Law of Electrolysis states that the mass of a substance produced at an electrode during electrolysis (m)is directly proportional to the number of moles of electrons transferred at that electrode (n).Which of the following equations correctly characterizes the relation?

Accepted Answer

A) m = k × n 
B) As the number of electrons transferred increases the mass deposited decreases. 
C) There is one conversion factor possible that relates m and n. 
D)    
E) All of the above correctly describe this relation. 
A) m = k × n 
B) As the number of electrons transferred increases the mass deposited decreases. 
C) There is one conversion factor possible that relates m and n. 
D)    
E) All of the above correctly describe this relation.

Question 6

How many fluid ounces are in a 2.5 gallon container? By definition,there are 4 qt/gal and 32 fl oz/qt.

Accepted Answer

A) 0.0031 fl oz 
B) 0.31 fl oz 
C) 0.020 fl oz 
D) 20 fl oz 
E) 3.2 × 102 fl oz 
A) 0.0031 fl oz 
B) 0.31 fl oz 
C) 0.020 fl oz 
D) 20 fl oz 
E) 3.2 × 102 fl oz

Question 7

Examine the following graph.   What is the value of x when y = 2.00?

Accepted Answer

A) 2.00 
B) 3.75 
C) 11.3 
D) 5.00 
E) 4.00 
A) 2.00 
B) 3.75 
C) 11.3 
D) 5.00 
E) 4.00

Question 8

Consider the following measured number.640,000 m If this measurement were made to the nearest km (± 1 km),how should the answer be expressed in exponential notation?

Accepted Answer

A) 6.4 × 105 m 
B) 6.40 × 105 m 
C) 6.400 × 105 m 
D) 6.4000 × 105 m 
E) 6.40000 × 105 m 
A) 6.4 × 105 m 
B) 6.40 × 105 m 
C) 6.400 × 105 m 
D) 6.4000 × 105 m 
E) 6.40000 × 105 m

The temperature in the laboratory is posted as 295 K.What is this temperature in degrees Celsius?

Consider that .If 1559 cm is converted to inches,how many significant figures should be in the answer?

Complete the following operation: 8.36 × 10⁶ + 1.320 × 10⁷

How many significant figures are in each of the following quantities? i. 0.00062 kg ii. 0.720 in. iii. 4.150 × 103 lb iv. 0.305 m3

Faraday's Law of Electrolysis states that the mass of a substance produced at an electrode during electrolysis (m)is directly proportional to the number of moles of electrons transferred at that electrode (n).Which of the following equations correctly characterizes the relation?

How many fluid ounces are in a 2.5 gallon container? By definition,there are 4 qt/gal and 32 fl oz/qt.

Examine the following graph. What is the value of x when y = 2.00?

Consider the following measured number.640,000 m If this measurement were made to the nearest km (± 1 km),how should the answer be expressed in exponential notation?

Matter and Energy

Introduction to Gases

Atomic Theory: The Nuclear Model of the Atom

Chemical Nomenclature

Chemical Formula Relationships

Chemical Reactions

Chemical Change

Quantity Relationships in Chemical Reactions

Atomic Theory: The Quantum Model of the Atom

Chemical Bonding

Structure and Shape

The Ideal Gas Law and Its Applications

Gases, Liquids, and Solids

Solutions

Acidbase Proton Transferreactions

Chemical Equilibrium

Oxidationreduction Electron Transferreactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

Exam 3: Measurement and Chemical Calculations

The temperature in the laboratory is posted as 295 K.What is this temperature in degrees Celsius?

Consider that .If 1559 cm is converted to inches,how many significant figures should be in the answer?

Complete the following operation: 8.36 × 106 + 1.320 × 107

How many significant figures are in each of the following quantities? i. 0.00062 kg ii. 0.720 in. iii. 4.150 × 103 lb iv. 0.305 m3

Faraday's Law of Electrolysis states that the mass of a substance produced at an electrode during electrolysis (m)is directly proportional to the number of moles of electrons transferred at that electrode (n).Which of the following equations correctly characterizes the relation?

How many fluid ounces are in a 2.5 gallon container? By definition,there are 4 qt/gal and 32 fl oz/qt.

Examine the following graph. What is the value of x when y = 2.00?

Consider the following measured number.640,000 m If this measurement were made to the nearest km (± 1 km),how should the answer be expressed in exponential notation?

Matter and Energy

Introduction to Gases

Atomic Theory: The Nuclear Model of the Atom

Chemical Nomenclature

Chemical Formula Relationships

Chemical Reactions

Chemical Change

Quantity Relationships in Chemical Reactions

Atomic Theory: The Quantum Model of the Atom

Chemical Bonding

Structure and Shape

The Ideal Gas Law and Its Applications

Gases, Liquids, and Solids

Solutions

Acidbase Proton Transferreactions

Chemical Equilibrium

Oxidationreduction Electron Transferreactions

Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

Complete the following operation: 8.36 × 10⁶ + 1.320 × 10⁷