Question

In: Chemistry

According to the American insurance companies, a driver will travel 12,000 miles in a single year....

According to the American insurance companies, a driver will travel 12,000 miles in a single year. Gasoline may be taken as primarily C8H18, octane, and the reaction with dioxygen is given below. The drivers vehicle gets 30.0 miles per gallon. The density of octane is 0.703g/ml.
2C8H18 + 25O2 - 16CO2 + 18H2O
A. How much gasoline in gallons is used in one year?
B. How much gasoline in grams is used in one year?
C. How much CO2 in grams is produced in a single year? How many pounds of CO2 are produced?

Solutions

Expert Solution

2C8H18 + 25O2 - 16CO2 + 18H2O

A. How much gasoline in gallons is used in one year?

1 gallon = 30 miles

no of gallons = 12000/30 = 400

B. How much gasoline in grams is used in one year?

volume of gasoline in ml = 400*3.785*10^3    (1 gallon = 3.785*10^3 ml)

                          = 1.514*10^6 ml

mass of octane = v*d

       = 1.514*10^6*0.703

       = 1.06*10^6 g

C. How much CO2 in grams is produced in a single year? How many pounds of CO2 are produced?


from equation , 2 mol C8H18 = 18 mol CO2

NO of mol of OCtane needed = 1.06*10^6/114.23 = 9279.52 mol

NO of mol of CO2 produced = 9279.52*18 = 1.67*10^5 mol

mass of co2 produced = 1.67*10^5*44

             = 7.35*10^6 g

queen_honey_blossom answered 2 years ago
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