1. The problem statement, all variables and given/known data Suppose one gallon of gasoline produces 1.01×108 J of energy, and this energy is sufficient to operate a car for 18.2 miles. An aspirin tablet has a mass of 332 mg. If the aspirin could be converted completely into thermal energy, how many miles could the car go on a single tablet? 2. Relevant equations 3. The attempt at a solution 1 gallon of gas= (1.01E8) J Distance of car(on gas)= 18.2 miles Mass(aspirin)= 332 mg Looking for Distance of car(on asprin)=??? I converted the mass from grams to kilograms. 332mg = (332E-3)g = (332E-6)kg *After this I'm not sure if I'm doing the right thing.* The problem says "converted completely into thermal energy" so I'm assuming that this means I need to find the rest energy. Erest=mc^2 [m=mass in kg; c=speed of light=(3E8)m/s] =(332E-6)(3E8)^2 =(332E-6)(9E16) =(2.988E13) J I then set up the energy of gas, distance on gas and the energy I found abvoe of the asprin, to solve for distance on asprin? (distance of gas)/(energy of gas)=(distance of aspirin)/(energy of aspirin) =(18.2 miles)/((1.01E8)J)=(?distace of asprin?)/((2.988E13)J) =[(18.2)(2.988E13)]/(1.01E8) =(5.43816E14)/(1.01E8) =5384316.832 miles = (5.38E6) miles However that answer is incorrect and I'm not sure if I am even using the right formulas for this problem. Any help would be greatly appreciated!