Question 1

Read the water level with the correct number of significant figures.

Accepted Answer

A)  87 ml 
B)  87.2 mL 
C)  87.20 mL 
D)  87.200 mL 
E)  87.2000 mL 
A)  87 ml 
B)  87.2 mL 
C)  87.20 mL 
D)  87.200 mL 
E)  87.2000 mL

Question 2

Identify the common substance that has the highest density.

Accepted Answer

A)  sugar 
B)  water 
C)  glass 
D)  lead 
E)  aluminum 
A)  sugar 
B)  water 
C)  glass 
D)  lead 
E)  aluminum

Question 3

Determine the mass of an object that has a volume of 88.6 mL and a density of 7.77 g/mL.

Accepted Answer

A)  96.4 g 
B)  0.0877 g 
C)  11.4 g 
D)  80.8 g 
E)  688 g 
A)  96.4 g 
B)  0.0877 g 
C)  11.4 g 
D)  80.8 g 
E)  688 g

Question 4

Which of the following is the SMALLEST volume?

Accepted Answer

A)  2.6 cm3 
B)  0.065 dL 
C)  3.5 × 102 mL 
D)  9.0 × 106 nL 
A)  2.6 cm3 
B)  0.065 dL 
C)  3.5 × 102 mL 
D)  9.0 × 106 nL

Question 5

How many significant figures are in 1009.630 mL?

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  6 
E)  7 
A)  3 
B)  4 
C)  5 
D)  6 
E)  7

Question 6

The estimated costs for remodelling the interior of an apartment are: three 1-gallon cans of paint at $12.89 each,two paint brushes at $12.22 each,and $145 for a helper.The total estimated cost with the appropriate significant figures is $_______.

Accepted Answer

A)  208.11 
B)  2.1 ×   
C)  208 
D)  2 ×   
E)  208.1 
A)  208.11 
B)  2.1 ×   
C)  208 
D)  2 ×   
E)  208.1

Question 7

If an object has a density of 8.65 g/cm3,what is its density in units of kg/m3?

Accepted Answer

A)  8.65 × 10-3 kg/m3 
B)  8.65 × 10-7 kg/m3 
C)  8.65 × 103 kg/m3 
D)  8.65 × 101 kg/m3 
E)  8.65 × 10-1 kg/m3 
A)  8.65 × 10-3 kg/m3 
B)  8.65 × 10-7 kg/m3 
C)  8.65 × 103 kg/m3 
D)  8.65 × 101 kg/m3 
E)  8.65 × 10-1 kg/m3

Question 8

What answer should be reported,with the correct number of significant figures,for the following calculation? (433.621 - 333.9)× 11.900

Accepted Answer

A)  1.19 × 103 
B)  1.187 × 103 
C)  1.1868 × 103 
D)  1.18680 × 103 
E)  1.186799 × 103 
A)  1.19 × 103 
B)  1.187 × 103 
C)  1.1868 × 103 
D)  1.18680 × 103 
E)  1.186799 × 103

Question 9

What symbol is used to represent the factor 109?

Accepted Answer

A)  M 
B)  m 
C)  μ 
D)  G 
A)  M 
B)  m 
C)  μ 
D)  G

Question 10

What decimal power does the abbreviation kilo represent?

Accepted Answer

A)  1 × 10-1 
B)  1 × 106 
C)  7 1 × 10-2 
D)  1 × 103 
E)  1 × 10-3 
A)  1 × 10-1 
B)  1 × 106 
C)  7 1 × 10-2 
D)  1 × 103 
E)  1 × 10-3

Question 11

Gas is sold for $1.399 per liter in Toronto,Canada.Your car needs 12.00 gallons.How much will your credit card be charged in Canadian dollars?

Accepted Answer

A)  $16.79 
B)  $67.15 
C)  $4.44 
D)  $63.54 
A)  $16.79 
B)  $67.15 
C)  $4.44 
D)  $63.54

Question 12

A fishing boat accidentally spills 6.0 barrels of diesel oil into the ocean.Each barrel contains 42 gallons.If the oil film on the ocean is 2.5 × 102 nm thick,how many square meters will the oil slick cover?

Accepted Answer

A)  3.8 × 10-3 m2 
B)  3.8 × 106 m2 
C)  3.8 × 107 m2 
D)  none of these 
A)  3.8 × 10-3 m2 
B)  3.8 × 106 m2 
C)  3.8 × 107 m2 
D)  none of these

Question 13

The density of air under ordinary conditions at 25°C is 1.19 g/L.How many kilograms of air are in a room that measures 10.0 ft x 11.0 ft and has an 10.0 ft ceiling? 1 in. = 2.54 cm. (exactly); 1 L= 103 cm3

Accepted Answer

A)  3.32 
B)  0.138 
C)  3.71 ×   
D)  0.0795 
E)  37.1 
A)  3.32 
B)  0.138 
C)  3.71 ×   
D)  0.0795 
E)  37.1

Question 14

If 1.4% of the mass of a human body is calcium,how many kilograms of calcium are there in a 185-pound man?

Accepted Answer

A)  1.2 kg Ca 
B)  5.7 kg Ca 
C)  1.2 × 102 kg Ca 
D)  5.7 × 102 kg 
A)  1.2 kg Ca 
B)  5.7 kg Ca 
C)  1.2 × 102 kg Ca 
D)  5.7 × 102 kg

Question 15

How many significant figures are there in the answer to the following problem?
( 8)881 × 2.100)+ 0.590 = ?

Accepted Answer

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

Question 16

A student performs an experiment to determine the density of a sugar solution.She obtains the following results: 1.79 g/mL,1.81 g/mL,1.80 g/mL,1.81 g/mL.If the actual value for the density of the sugar solution is 1.80 g/mL,which statement below best describes her results?

Accepted Answer

A)  Her results are precise, but not accurate. 
B)  Her results are accurate, but not precise. 
C)  Her results are both precise and accurate 
D)  Her results are neither precise nor accurate. 
E)  It isn't possible to determine with the information given. 
A)  Her results are precise, but not accurate. 
B)  Her results are accurate, but not precise. 
C)  Her results are both precise and accurate 
D)  Her results are neither precise nor accurate. 
E)  It isn't possible to determine with the information given.

Question 17

How many significant figures are in 4.500 × 104 m?

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  7 
E)  8 
A)  3 
B)  4 
C)  5 
D)  7 
E)  8

Question 18

The mass of a proton is 1.67 × 10-27 kg.What is the mass of a proton in milligrams?

Accepted Answer

A)  1.67 × 10-27 mg 
B)  1.67 × 10-24 mg 
C)  1.67 × 10-21 mg 
D)  1.67 × 10-18 mg 
A)  1.67 × 10-27 mg 
B)  1.67 × 10-24 mg 
C)  1.67 × 10-21 mg 
D)  1.67 × 10-18 mg

Question 19

1.032 lb = ________ grams.(1 lb = 454 g)

Accepted Answer

The answer of 1.032 lb = ________ grams.(1 lb =...

Question 20

How many cm are in 24.2 ft?

Accepted Answer

A)  9.53 cm 
B)  290 cm 
C)  61.5 cm 
D)  738 cm 
E)  0.794 cm 
A)  9.53 cm 
B)  290 cm 
C)  61.5 cm 
D)  738 cm 
E)  0.794 cm

Exam 1: Essentials: Units, Measurements, and Problem Solving

Read the water level with the correct number of significant figures.

Identify the common substance that has the highest density.

Determine the mass of an object that has a volume of 88.6 mL and a density of 7.77 g/mL.

Which of the following is the SMALLEST volume?

How many significant figures are in 1009.630 mL?

The estimated costs for remodelling the interior of an apartment are: three 1-gallon cans of paint at $12.89 each,two paint brushes at $12.22 each,and $145 for a helper.The total estimated cost with the appropriate significant figures is $_______.

If an object has a density of 8.65 g/cm3,what is its density in units of kg/m3?

What answer should be reported,with the correct number of significant figures,for the following calculation? (433.621 - 333.9)× 11.900

What symbol is used to represent the factor 109?

What decimal power does the abbreviation kilo represent?

Gas is sold for $1.399 per liter in Toronto,Canada.Your car needs 12.00 gallons.How much will your credit card be charged in Canadian dollars?

A fishing boat accidentally spills 6.0 barrels of diesel oil into the ocean.Each barrel contains 42 gallons.If the oil film on the ocean is 2.5 × 102 nm thick,how many square meters will the oil slick cover?

The density of air under ordinary conditions at 25°C is 1.19 g/L.How many kilograms of air are in a room that measures 10.0 ft x 11.0 ft and has an 10.0 ft ceiling? 1 in. = 2.54 cm. (exactly); 1 L= 103 cm3

If 1.4% of the mass of a human body is calcium,how many kilograms of calcium are there in a 185-pound man?

How many significant figures are there in the answer to the following problem? ( 8)881 × 2.100)+ 0.590 = ?

A student performs an experiment to determine the density of a sugar solution.She obtains the following results: 1.79 g/mL,1.81 g/mL,1.80 g/mL,1.81 g/mL.If the actual value for the density of the sugar solution is 1.80 g/mL,which statement below best describes her results?

How many significant figures are in 4.500 × 104 m?

The mass of a proton is 1.67 × 10-27 kg.What is the mass of a proton in milligrams?

1.032 lb = ________ grams.(1 lb = 454 g)

How many cm are in 24.2 ft?

Atoms

The Quantum Mechanical Model of the Atom

Periodic Properties of the Elements

Molecules and Compounds

Chemical Bonding I

Chemical Bonding Ii

Chemical Reactions and Chemical Quantities

Introduction to Solutions and Aqueous Reactions

Thermochemistry

Gases

Liquids, Solids, and Intermolecular Forces

Crystalline Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Transition Metals and Coordination Compounds

Filters

If an object has a density of 8.65 g/cm³,what is its density in units of kg/m³?

What symbol is used to represent the factor 10⁹?

A fishing boat accidentally spills 6.0 barrels of diesel oil into the ocean.Each barrel contains 42 gallons.If the oil film on the ocean is 2.5 × 10² nm thick,how many square meters will the oil slick cover?

The density of air under ordinary conditions at 25°C is 1.19 g/L.How many kilograms of air are in a room that measures 10.0 ft x 11.0 ft and has an 10.0 ft ceiling? 1 in. = 2.54 cm. (exactly); 1 L= 10³ cm³

How many significant figures are in 4.500 × 10⁴ m?

The mass of a proton is 1.67 × 10^-27 kg.What is the mass of a proton in milligrams?