Question 1

Using the rules of significant figures, calculate the following: 12.67 + 13.005 =

Accepted Answer

A)  25.675 
B)  25 
C)  20 
D)  25.68 
E)  26 
A)  25.675 
B)  25 
C)  20 
D)  25.68 
E)  26

Question 2

Using the rules of significant figures, calculate the following:
13.4561 - 3.48
a.
9.98
b.
10
c.
9.9761
d.
9.976
e.
9

Accepted Answer

The answer of Using the rules of significant figures, calculate...

Question 3

The Celsius equivalent of 62.2 K is

Accepted Answer

A)  335.2°C 
B)  62.2°C 
C)  162.2°C 
D)  -210.8°C 
E)  144.0°C 
A)  335.2°C 
B)  62.2°C 
C)  162.2°C 
D)  -210.8°C 
E)  144.0°C

Question 4

Copper has a density of 8.96 g/cm3. If a cylinder of copper weighing 34.94 g is dropped into a graduated cylinder containing 20.00 mL of water, what will be the new water level?

Accepted Answer

A)  3.90 mL 
B)  0.256 mL 
C)  16.10 mL 
D)  23.90 mL 
E)  32.86 mL 
A)  3.90 mL 
B)  0.256 mL 
C)  16.10 mL 
D)  23.90 mL 
E)  32.86 mL

Question 5

An experiment requires 66.6 g of ethyl alcohol (density = 0.790 g/mL). What volume, in liters, will be required?

Accepted Answer

A)    L 
B)    L 
C)  8.43e4 L 
D)    L 
E)  52.6 L 
A)    L 
B)    L 
C)  8.43e4 L 
D)    L 
E)  52.6 L

Question 6

The density of an object that has a mass of 8.07 g and occupies a volume of 1.20 mL equals

Accepted Answer

A)  8.07 g/mL 
B)  1.20 g/mL 
C)  6.73 g/mL 
D)  0.15 g/mL 
E)  9.68 g/mL 
A)  8.07 g/mL 
B)  1.20 g/mL 
C)  6.73 g/mL 
D)  0.15 g/mL 
E)  9.68 g/mL

Question 7

Express 30523000 in scientific notation.

Accepted Answer

A)  3 *107 
B)  3.0523 * 107 
C)  305 * 107 
D)  30523 * 103 
E)  305230 *107 
A)  3 *107 
B)  3.0523 * 107 
C)  305 * 107 
D)  30523 * 103 
E)  305230 *107

Question 8

Which metric prefix is used to designate 1/10?

Accepted Answer

A)  d 
B)  c 
C)  m 
D)  M 
E)  k 
A)  d 
B)  c 
C)  m 
D)  M 
E)  k

Question 9

Convert: 2.80 in = _____________ mm.

Accepted Answer

A)  71.1 mm 
B)  7.11 mm 
C)  1.102 mm 
D)  0.71 mm 
E)  711 mm 
A)  71.1 mm 
B)  7.11 mm 
C)  1.102 mm 
D)  0.71 mm 
E)  711 mm

Question 10

Convert: -12.2°C = _____________ °F.

Accepted Answer

A)  -54.0°F 
B)  10.0°F 
C)  25.2°F 
D)  -38.8°F 
E)  -22.0°F 
A)  -54.0°F 
B)  10.0°F 
C)  25.2°F 
D)  -38.8°F 
E)  -22.0°F

Question 11

The number 0.002 expressed in exponential notation is

Accepted Answer

A)  2 * 103 
B)  2 * 104 
C)  2 * 10-3 
D)  2 * 10-4 
E)  none of these 
A)  2 * 103 
B)  2 * 104 
C)  2 * 10-3 
D)  2 * 10-4 
E)  none of these

Question 12

The number 0.00215 expressed in exponential notation is

Accepted Answer

A)  2.15 * 103 
B)  2.15 *10-2 
C)  215 *103 
D)  2.15 *102 
E)  2.15 *10-3 
A)  2.15 * 103 
B)  2.15 *10-2 
C)  215 *103 
D)  2.15 *102 
E)  2.15 *10-3

Question 13

Convert: 88.0 mg = _______________ lb.

Accepted Answer

A)  1.94 * 102 lb 
B)  8.80 * 10-5 lb 
C)  3.99 * 107 lb 
D)  3.88 * 10-4 lb 
E)  1.94 * 10-4 lb 
A)  1.94 * 102 lb 
B)  8.80 * 10-5 lb 
C)  3.99 * 107 lb 
D)  3.88 * 10-4 lb 
E)  1.94 * 10-4 lb

Question 14

If 1.000 kg equals 2.205 lb, what is the mass in pounds of a human who weighs 51.35 kg?

Accepted Answer

A)  113.2 lb 
B)  23.29 lb 
C)  93.2 lb 
D)  53.56 lb 
E)  none of these 
A)  113.2 lb 
B)  23.29 lb 
C)  93.2 lb 
D)  53.56 lb 
E)  none of these

Question 15

Convert: 6.28 mL = _____________ qt.

Accepted Answer

A)  6.66 mL 
B)  5.92 mL 
C)    mL 
D)  1.11* 104 mL 
E)    mL 
A)  6.66 mL 
B)  5.92 mL 
C)    mL 
D)  1.11* 104 mL 
E)    mL

Question 16

How many significant figures are in the number 1.89 * 103?

Accepted Answer

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

Question 17

Convert: -10.5°F = _______________ °C.

Accepted Answer

A)  -23.6°C 
B)  11.9°C 
C)  -76.5°C 
D)  38.7°C 
E)  262.5°C 
A)  -23.6°C 
B)  11.9°C 
C)  -76.5°C 
D)  38.7°C 
E)  262.5°C

Question 18

A cubic centimeter (cm3) is equivalent to what other metric volume unit?

Accepted Answer

A)  milliliter 
B)  liter 
C)  deciliter 
D)  centimeter 
E)  millimeter 
A)  milliliter 
B)  liter 
C)  deciliter 
D)  centimeter 
E)  millimeter

Question 19

Convert:   g = ____________ kg.

Accepted Answer

A)    kg 
B)    kg 
C)    kg 
D)    kg 
E)  0.0344 kg 
A)    kg 
B)    kg 
C)    kg 
D)    kg 
E)  0.0344 kg

Question 20

Convert: 0.00668 cm = ____________ mm.

Accepted Answer

A)  6.68 mm 
B)  6.68 * 10-2 mm 
C)  0.668 mm 
D)  6.68 * 10-4 mm 
E)  6.68* 10-5 mm 
A)  6.68 mm 
B)  6.68 * 10-2 mm 
C)  0.668 mm 
D)  6.68 * 10-4 mm 
E)  6.68* 10-5 mm

Exam 2: Measurements and Calculations

Using the rules of significant figures, calculate the following: 12.67 + 13.005 =

Using the rules of significant figures, calculate the following: 13.4561 - 3.48 a. 9.98 b. 10 c. 9.9761 d. 9.976 e. 9

The Celsius equivalent of 62.2 K is

Copper has a density of 8.96 g/cm3. If a cylinder of copper weighing 34.94 g is dropped into a graduated cylinder containing 20.00 mL of water, what will be the new water level?

An experiment requires 66.6 g of ethyl alcohol (density = 0.790 g/mL). What volume, in liters, will be required?

The density of an object that has a mass of 8.07 g and occupies a volume of 1.20 mL equals

Express 30523000 in scientific notation.

Which metric prefix is used to designate 1/10?

Convert: 2.80 in = _____________ mm.

Convert: -12.2°C = _____________ °F.

The number 0.002 expressed in exponential notation is

The number 0.00215 expressed in exponential notation is

Convert: 88.0 mg = _______________ lb.

If 1.000 kg equals 2.205 lb, what is the mass in pounds of a human who weighs 51.35 kg?

Convert: 6.28 mL = _____________ qt.

How many significant figures are in the number 1.89 * 103?

Convert: -10.5°F = _______________ °C.

A cubic centimeter (cm3) is equivalent to what other metric volume unit?

Convert: g = ____________ kg.

Convert: 0.00668 cm = ____________ mm.

Chemistry: an Introduction

Matter

Chemical Foundations: Elements, Atoms, and Ions

Nomenclature

Chemical Reactions: an Introduction

Reactions in Aqueous Solutions

Chemical Composition

Chemical Quantities

Energy

Modern Atomic Theory

Chemical Bonding

Gases

Liquids and Solids

Solutions

Acids and Bases

Equilibrium

Oxidation-Reduction Reactions and Electrochemistry

Radioactivity and Nuclear Energy

Organic Chemistry

Biochemistry

Filters

Copper has a density of 8.96 g/cm³. If a cylinder of copper weighing 34.94 g is dropped into a graduated cylinder containing 20.00 mL of water, what will be the new water level?

How many significant figures are in the number 1.89 * 10³?

A cubic centimeter (cm³) is equivalent to what other metric volume unit?