Question 1

Problem Solving in Chemistry and Engineering If a particle is traveling at 98% of the speed of light in a vacuum (2.998 x 10 ⁸m\s), what is its velocity in miles per hour? 1.00 mile = 1.61 kilometers.

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If...

Question 2

Focus on Problem Solving Exercises 
Battery acid has a density of 1.285 g\mL and contains 38.0% sulfuric acid by mass. Describe how you would determine the mass of pure sulfuric acid in a car battery, noting the item(s)you would have to measure or look up.

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Battery acid...

Question 3

Numbers and Measurements 
In an attempt to determine the velocity of a person on a bicycle, an observer uses a stopwatch and times the length of time it takes to cover 25 "squares" on a sidewalk. A measurement of one of the squares shows it to be 1.13 m long. The bicycle takes 4.82 seconds to travel this far. What velocity, in m\sec, should the observer report?

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In an attempt to...

Question 4

Problem Solving in Chemistry and Engineering 
A metallic cylinder displaces 91.0 mL and has a mass of 245.7 g. What is the density of the metal?

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A...

Question 5

Problem Solving in Chemistry and Engineering 
The distance between two atoms in a molecule is 148 pm. What is this distance in meters?

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The...

Question 6

Numbers and Measurements 
How many significant figures are present in each of the following experimental measurements? 
a)0.003 m 
b)6030 kg 
c)400.3 s 
d)0.000701 L 
e)31.624 km

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How many significant figures...

Question 7

Insight into Materials Selection and Bicycle Frames 
Use the web to research the elastic modulus and yield strength of carbon fiber composites. How do these materials compare to aluminum, steel and titanium?

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Question 8

Problem Solving in Chemistry and Engineering 
Draw a molecular scale picture to show how a crystal differs from a liquid.

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Draw...

Question 9

Problem Solving in Chemistry and Engineering 
Carry out the following unit conversions.

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Carry...

Question 10

Numbers and Measurements 
Assuming the numbers given are measurements, carry out the indicated arithmetic operations and give the answer with the correct number of significant figures.

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Assuming the numbers given...

Question 11

Numbers and Measurements 
A rock is placed on a balance and its mass is determined to be 22.410 g. When the same rock is placed in a graduated cylinder that originally contains 11.34 mL of water, the new volume of water is 17.82 mL. What should the density of the rock be reported as?

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A rock is placed...

Question 12

Focus on Problem Solving Exercises 
A solution of ethanol in water has a volume of 54.2 mL and a mass of 49.6 g. What information would you need to look up and how would you determine the percentage of ethanol in this solution?

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A solution...

Question 13

Numbers and Measurements 
Measurements indicate that 23.6% of the residents of a city with a population of 531,314 are college graduates. Considering significant figures, how many college graduates are estimated to reside in this city?

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Measurements indicate that 23.6%...

Question 14

Focus on Problem Solving Exercises 
A student was given two metal cubes that looked similar. One had an edge of 1.05 cm and had a mass of 14.32 grams, and the other had an edge of 2.66 cm and had a mass of 215.3 grams. How can the student determine if these two cubes of metal are the same material using only the data given?

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A student...

Question 15

Insight into Materials Selection and Bicycle Frames 
Rank aluminum, steel, and titanium in order of increasing stiffness.

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Question 16

Numbers and Measurements 
Express each of the following temperatures in ° C.

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Express each of the...

Question 17

Problem Solving in Chemistry and Engineering 
If the cost to fill a gasoline tank is $78.42 and gasoline costs $3.66\gal, how many gallons can the tank hold? How many liters of gasoline could be purchased for $50.00?(1 gallon = 3.78 liter)

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If...

Question 18

Insight into Materials Selection and Bicycle Frames 
Aluminum is not as strong as steel. What other factor should be considered when comparing the desirability of aluminum versus steel if strength is an important consideration for a design?

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Question 19

Problem Solving in Chemistry and Engineering 
Mercury has a density of 13.6 g\mL. What is the mass of 4.72 L of mercury?

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Mercury...

Question 20

Problem Solving in Chemistry and Engineering 
Use the web to determine the chemicals that are involved in the precipitation process while refining aluminum and draw a molecular scale drawing of this reaction.

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Use...

Quiz 1: Introduction to Chemistry

Problem Solving in Chemistry and Engineering If a particle is traveling at 98% of the speed of light in a vacuum (2.998 x 10 8 m\s), what is its velocity in miles per hour? 1.00 mile = 1.61 kilometers.

Focus on Problem Solving Exercises Battery acid has a density of 1.285 g\mL and contains 38.0% sulfuric acid by mass. Describe how you would determine the mass of pure sulfuric acid in a car battery, noting the item(s)you would have to measure or look up.

Problem Solving in Chemistry and Engineering A metallic cylinder displaces 91.0 mL and has a mass of 245.7 g. What is the density of the metal?

Problem Solving in Chemistry and Engineering The distance between two atoms in a molecule is 148 pm. What is this distance in meters?

Numbers and Measurements How many significant figures are present in each of the following experimental measurements? a)0.003 m b)6030 kg c)400.3 s d)0.000701 L e)31.624 km

Insight into Materials Selection and Bicycle Frames Use the web to research the elastic modulus and yield strength of carbon fiber composites. How do these materials compare to aluminum, steel and titanium?

Problem Solving in Chemistry and Engineering Draw a molecular scale picture to show how a crystal differs from a liquid.

Problem Solving in Chemistry and Engineering Carry out the following unit conversions.

Numbers and Measurements Assuming the numbers given are measurements, carry out the indicated arithmetic operations and give the answer with the correct number of significant figures.

Numbers and Measurements A rock is placed on a balance and its mass is determined to be 22.410 g. When the same rock is placed in a graduated cylinder that originally contains 11.34 mL of water, the new volume of water is 17.82 mL. What should the density of the rock be reported as?

Focus on Problem Solving Exercises A solution of ethanol in water has a volume of 54.2 mL and a mass of 49.6 g. What information would you need to look up and how would you determine the percentage of ethanol in this solution?

Numbers and Measurements Measurements indicate that 23.6% of the residents of a city with a population of 531,314 are college graduates. Considering significant figures, how many college graduates are estimated to reside in this city?

Insight into Materials Selection and Bicycle Frames Rank aluminum, steel, and titanium in order of increasing stiffness.

Numbers and Measurements Express each of the following temperatures in ° C.

Problem Solving in Chemistry and Engineering If the cost to fill a gasoline tank is $78.42 and gasoline costs $3.66\gal, how many gallons can the tank hold? How many liters of gasoline could be purchased for $50.00?(1 gallon = 3.78 liter)

Insight into Materials Selection and Bicycle Frames Aluminum is not as strong as steel. What other factor should be considered when comparing the desirability of aluminum versus steel if strength is an important consideration for a design?

Problem Solving in Chemistry and Engineering Mercury has a density of 13.6 g\mL. What is the mass of 4.72 L of mercury?

Problem Solving in Chemistry and Engineering Use the web to determine the chemicals that are involved in the precipitation process while refining aluminum and draw a molecular scale drawing of this reaction.

Problem Solving in Chemistry and Engineering If a particle is traveling at 98% of the speed of light in a vacuum (2.998 x 10 ⁸m\s), what is its velocity in miles per hour? 1.00 mile = 1.61 kilometers.