1. (a) Using information at the top of this sheet, derive the conversions from Fahrenheit to Kelvin and back:  and .
2. (a) A steel bridge is 518m long. How much does its length change between temperature extremes of  and  ?
(b) An automobile fuel tank is filled to the brim with 50L of gasoline at  . Immediately afterward, the vehicle is parked in the Sun where the temperature reaches  . How much gasoline overflows from the tank as a result of expansion? Neglect the expansion of the tank.
3. Calculate the number of molecules in 1L of air near the earth's surface (1atm)
(a) on a hot day ().
(b) and on a cold day ( ).
4. Ice water inside a Styrofoam cooler contains 1.0kg of ice at . In a room at  the ice completely melts in 8hrs. How long would the same amount of ice last if the cooler is outdoors where the temperature is  ? HINT: You do not need to know the latent heat of melting . Also,  is irrelevant since there is no change in temperature.
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