1. What food item will provide 1 mole of sodium in the least mass? What is that mass? 2. What food item will provide a minimum of 1 mole of both sodium and potassium with the least mass? What is that mass?

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.