Nick Wagner Honors Science, Hour 7 12/15/2011
Charles’s Law Charles’s Law represents the direct relationship between the temperature and volume of a gas at a constant mass and pressure. The volume of a gas is directly proportional to its temperature. The formula for the relationship is
where V represents volume,
and T represents temperature. Since the relationship between volume and temperature is directly proportional, if temperature changes by a factor of x, you can calculate the final volume by multiplying the initial volume by x. One important thing to remember is that for this calculation to work, the temperature must be given in Kelvin. If it is given in Fahrenheit or Celsius, you must convert it to Kelvin before solving the rest of the problem. I experience Charles’s Law firsthand every winter. A football, basketball, or sledding tube that had been fully inflated while indoors becomes slightly flat when it is taken outside, due to none other than Charles’s Law. Since the temperature of the gas is lowered when it encounters harsh Wisconsin winter weather, the volume of the gas inside the object decreases, causing the object to go flat.