The specific heat capacity of water is 4.18 J/gºC. A water heater warms 3500 grams of water from a temperature of 78.7
°C to 83.7 °C. Determine the amount of energy in joules)
required.

The size (radius) of an oxygen molecule is about 2.0 ×10−10m. make a rough estimate of the pressure at which the finite volume of the molecules should cause noticeable deviations from ideal-gas behavior at ordinary temperatures (t= 300k ). assume that deviatons would be noticeable when volume of the gas per molecule equals the volume of the molecule itself.