   # The following graph shows U.S. carbon dioxide emissions between 1949 and 2011: a. Calculate the total increase in CO 2 emissions (in billion metric tons) between 1949 and 2011. Also calculate the percentage increase for this time period. b. Calculate the average percentage increase in CO 2 emissions per year for this time period. ### Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

#### Solutions

Chapter
Section ### Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 9, Problem 58E
Textbook Problem
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## The following graph shows U.S. carbon dioxide emissions between 1949 and 2011: a. Calculate the total increase in CO 2 emissions (in billion metric tons) between 1949 and 2011. Also calculate the percentage increase for this time period.b. Calculate the average percentage increase in CO 2 emissions per year for this time period.

Interpretation Introduction

Interpretation:

Total increase and the percentage increase in emission of CO2 between 1949 and 2011 are to be calculated along with the average percentage increase in CO2 emission per year between 1949 and 2011.

Concept Introduction:

Energy is the property that is required by an object to perform work and to heat itself and it can be measured.

The average change is calculated by dividing the change in the value by the elapsed time.

### Explanation of Solution

a) The total increase in emission of CO2 and also the percentage increase for the period between 1949 and 2011.

The percentage increase in emission of CO2 between 1949 and 2011 is calculated as follows:

The percentage emission of CO2=Emission of CO2in2011Emission of CO2in1949Emission of CO2in1949×100

Substitute the value of emission of CO2 in 1949 and in 2011 in the above expression.

Theyearlyaverageconsumption=(5.52.22.2×100)=(3.32

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