Question 1

If normal body temperature is 98.6°F then what is this in degrees Celsius?

Accepted Answer

A) 34°C 
B) 35.5°C 
C) 36.4°C 
D) 37.0°C 
E) 38.7°C 
A) 34°C 
B) 35.5°C 
C) 36.4°C 
D) 37.0°C 
E) 38.7°C D

Question 2

A flask has a mass of 78.23 g when empty and 593.63 g when filled with water.When the same flask is filled with concentrated sulfuric acid,H2SO4,its mass is 1026.57 g.What is the density of concentrated sulfuric acid? (Assume water has a density of 1.00 g/cm3 at the temperature of the measurement.)

Accepted Answer

A) 1.992 g/cm3 
B) 1.840 g/cm3 
C) 1.729 g/cm3 
D) 1.598 g/cm3 
E) 0.543 g/cm3 
A) 1.992 g/cm3 
B) 1.840 g/cm3 
C) 1.729 g/cm3 
D) 1.598 g/cm3 
E) 0.543 g/cm3 B

Question 3

The distance between carbon atoms in ethylene is 134 picometers.Which of the following expresses that distance in meters?

Accepted Answer

A) 1.34 × 10-13 m 
B) 1.34 × 10-12 m 
C) 1.34 × 10-10 m 
D) 1.34 × 10-7 m 
E) 1.34 × 10-6 m 
A) 1.34 × 10-13 m 
B) 1.34 × 10-12 m 
C) 1.34 × 10-10 m 
D) 1.34 × 10-7 m 
E) 1.34 × 10-6 m C

Question 4

Which is correct if 0.01234 is rewritten in scientific notation?

Accepted Answer

A) 1.234 × 10-3 
B) 12.3 × 104 
C) 1 × 10-1 
D) 1.234 × 102 
E) 1.234 × 10-2 
A) 1.234 × 10-3 
B) 12.3 × 104 
C) 1 × 10-1 
D) 1.234 × 102 
E) 1.234 × 10-2

Question 5

Isopropyl alcohol,commonly known as rubbing alcohol,boils at 82.4°C.What is the boiling point in kelvins?

Accepted Answer

A) 387.6 K 
B) 355.6 K 
C) 323.6 K 
D) 190.8 K 
E) -190.8 K 
A) 387.6 K 
B) 355.6 K 
C) 323.6 K 
D) 190.8 K 
E) -190.8 K

Question 6

The average distance between the Earth and the Moon is 240,000 miles.Express this distance in meters.(1 mi = 1609 m)

Accepted Answer

A) 6.1 × 105 m 
B) 5.3 × 105 m 
C) 3.9 × 108 m 
D) 1.5 × 105 m 
E) 9.4 × 104 m 
A) 6.1 × 105 m 
B) 5.3 × 105 m 
C) 3.9 × 108 m 
D) 1.5 × 105 m 
E) 9.4 × 104 m

Question 7

____________ tells how close a measurement is to the true value.

Accepted Answer

The answer of ____________ tells how close a measurement is...

Question 8

How many cubic inches are in 1.00 liter? (1 in = 2.54 cm)

Accepted Answer

A) 61.0 in3 
B) 155 in3 
C) 394 in3 
D) 1.64 × 104 in3 
E) none of them 
A) 61.0 in3 
B) 155 in3 
C) 394 in3 
D) 1.64 × 104 in3 
E) none of them

Question 9

Which of the following is an extensive property?

Accepted Answer

A) Density 
B) Temperature 
C) Mass 
D) Specific Heat 
E) Pressure 
A) Density 
B) Temperature 
C) Mass 
D) Specific Heat 
E) Pressure

Question 10

Acetone,which is used as a solvent and as a reactant in the manufacture of Plexiglas,boils at 56.1°C.What is the boiling point in degrees Fahrenheit?

Accepted Answer

A) 159°F 
B) 133°F 
C) 101°F 
D) 69.0°F 
E) 43.4°F 
A) 159°F 
B) 133°F 
C) 101°F 
D) 69.0°F 
E) 43.4°F

Question 11

The boiling point for liquid nitrogen is 77 K.What is the temperature in degrees Fahrenheit?

Accepted Answer

A) -127°F 
B) -289°F 
C) -321°F 
D) 177°F 
E) 662°F 
A) -127°F 
B) -289°F 
C) -321°F 
D) 177°F 
E) 662°F

Question 12

The SI prefixes milli- and mega- represent,respectively

Accepted Answer

A) 106 and 10-6 
B) 10-3 and 106 
C) 103 and 10-6 
D) 10-3 and 109 
E) 10-6 and 10-3 . 
A) 106 and 10-6 
B) 10-3 and 106 
C) 103 and 10-6 
D) 10-3 and 109 
E) 10-6 and 10-3 .

Question 13

Which is correct if 52.068881 is rewritten in scientific notation and rounded to three significant figures?

Accepted Answer

A) 5.21 × 10-1 
B) 5.20 × 10-1 
C) 5.21 × 101 
D) 5.20 × 101 
E) 5.21 × 102 
A) 5.21 × 10-1 
B) 5.20 × 10-1 
C) 5.21 × 101 
D) 5.20 × 101 
E) 5.21 × 102

Question 14

The rusting of a piece of iron under environmental conditions is a physical change.

Accepted Answer

A) True 
 B)False

Question 15

A laboratory technician analyzed a sample three times for percent iron and got the following results: 22.43% Fe,24.98% Fe,and 21.02% Fe.The actual percent iron in the sample was 22.81%.The analyst's

Accepted Answer

A) precision was poor but the average result was accurate. 
B) accuracy was poor but the precision was good. 
C) work was only qualitative. 
D) work was precise. 
A) precision was poor but the average result was accurate. 
B) accuracy was poor but the precision was good. 
C) work was only qualitative. 
D) work was precise.

Question 16

___________ tells how closely multiple measurements of the same thing are to one another.

Accepted Answer

The answer of ___________ tells how closely multiple measurements of...

Question 17

Explain the difference between a physical property and a chemical property.

Accepted Answer

A physical property can be obs

Question 18

The city of Los Angeles is now approximately 2400 miles south of Anchorage,Alaska.It is moving slowly northward as the San Andreas fault slides along.If Los Angeles is to arrive near Anchorage in 76 million years,at what average rate will it have to move in mm per month? (1 mi = 1609 m)

Accepted Answer

A) 2.0 × 10-10 mm/mo. 
B) 6.6 × 10-6 mm/mo. 
C) 4.2 mm/mo. 
D) 9.5 mm/mo. 
E) 51 mm/mo. 
A) 2.0 × 10-10 mm/mo. 
B) 6.6 × 10-6 mm/mo. 
C) 4.2 mm/mo. 
D) 9.5 mm/mo. 
E) 51 mm/mo.

Question 19

An average Mastiff puppy weighs 2.72 kilograms.How many pounds is an average Mastiff puppy? (1lb = 453.6 g)

Accepted Answer

A) 1.24 lb 
B) 10.0 lb 
C) 59.8 lb 
D) 6.00 lb 
E) 72.0 lb 
A) 1.24 lb 
B) 10.0 lb 
C) 59.8 lb 
D) 6.00 lb 
E) 72.0 lb

Question 20

A(n)_______________ ____________ has a uniform composition throughout.

Accepted Answer

The answer of A(n)_______________ ____________ has a uniform composition throughout....

Exam 1: Chemistry: the Central Science

If normal body temperature is 98.6°F then what is this in degrees Celsius?

A flask has a mass of 78.23 g when empty and 593.63 g when filled with water.When the same flask is filled with concentrated sulfuric acid,H2SO4,its mass is 1026.57 g.What is the density of concentrated sulfuric acid? (Assume water has a density of 1.00 g/cm3 at the temperature of the measurement.)

The distance between carbon atoms in ethylene is 134 picometers.Which of the following expresses that distance in meters?

Which is correct if 0.01234 is rewritten in scientific notation?

Isopropyl alcohol,commonly known as rubbing alcohol,boils at 82.4°C.What is the boiling point in kelvins?

The average distance between the Earth and the Moon is 240,000 miles.Express this distance in meters.(1 mi = 1609 m)

____________ tells how close a measurement is to the true value.

How many cubic inches are in 1.00 liter? (1 in = 2.54 cm)

Which of the following is an extensive property?

Acetone,which is used as a solvent and as a reactant in the manufacture of Plexiglas,boils at 56.1°C.What is the boiling point in degrees Fahrenheit?

The boiling point for liquid nitrogen is 77 K.What is the temperature in degrees Fahrenheit?

The SI prefixes milli- and mega- represent,respectively

Which is correct if 52.068881 is rewritten in scientific notation and rounded to three significant figures?

The rusting of a piece of iron under environmental conditions is a physical change.

A laboratory technician analyzed a sample three times for percent iron and got the following results: 22.43% Fe,24.98% Fe,and 21.02% Fe.The actual percent iron in the sample was 22.81%.The analyst's

___________ tells how closely multiple measurements of the same thing are to one another.

Explain the difference between a physical property and a chemical property.

The city of Los Angeles is now approximately 2400 miles south of Anchorage,Alaska.It is moving slowly northward as the San Andreas fault slides along.If Los Angeles is to arrive near Anchorage in 76 million years,at what average rate will it have to move in mm per month? (1 mi = 1609 m)

An average Mastiff puppy weighs 2.72 kilograms.How many pounds is an average Mastiff puppy? (1lb = 453.6 g)

A(n)_______________ ____________ has a uniform composition throughout.

Atoms Molecules and Ions

Stoichiometry Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I Basic Concepts

Chemical Bonding Ii Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

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

Environmental Chemistry

Coordination Chemistry

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

A(n)___ has a uniform composition throughout.