There are several information's already given in the question. Based on those information's, the answer can be easily deduced. Amount of gasoline required by Harry's car to travel 25 miles = 1 gallon Then amount of gasoline required by Harry's car to travel 15000 miles = 15000/25 = 600 gallons So Amount of CO2 released by burning 1 gallon of gasoline = 20 pounds Then Amount of CO2 released by burning 600 gallon of gasoline = 600 * 20 = 12000 pounds From the above deduction, it can be concluded that the amount of CO2 that will be added by Harry's car to the atmosphere is 12000 pounds.
Soda is carbonated water. It contains carbon dioxide dissolved in water , which is carbonic acid. On opening the soda, the carbonic acid undergoes the reverse reaction and releases carbon dioxide in the air . The soda is thus left with just water and loses it's fizz.
