Prices on various gasoline products seen in the pump picture in Figure 5.14 are listed below: ● Premium, unleaded gasoline, without ethanol: 2.999 $/gallon ● Unleaded gasoline and 10% ethanol: 2.549...

Prices on various gasoline products seen in the pump picture in Figure 5.14 are listed below:

● Premium, unleaded gasoline, without ethanol: 2.999 $/gallon

● Unleaded gasoline and 10% ethanol: 2.549 $/gallon

● E-15: 2.4999 $/gallon

● E-85: 2.399 $/gallon Using the heating values of Problem 7, calculate the unit price in $/MJ for gasoline without ethanol and the blends of gasoline containing 10%, 15%, and 85% ethanol.

Figure 5.14

Problem 7

The heating values of pure gasoline and pure ethanol are 32.0 and 21.1 MJ/l respectively. How much heat per liter would produce combustion of

(a) pure gasoline,

(b) a blend of 90% gasoline and 10% ethanol, and

(c) blend of 15% gasoline and 85% ethanol?