If a car gets 18.7 miles per gallon, how many kilojoules of energy are used per mile? One gallon is equal to 2660 g of octane and the heat of combustion of octane is 47.8 kJ/g. Show all of your work.​

An unknown substance has been shown to have weak covalent bonds. which of the following is most likely a property of this substance? a. high ph b. high conductivity c. low melting point d. low flammability