The lethal dose for caffeine is approximately 175 mg/kg of body mass. There are 454 g in 1 lb and 1 cup coffee contains approximately 150 mg caffeine. a) How much caffeine would be lethal for a 120 lb person? b) How many cups of coffee is this?

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but