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?

Agas in a balloon at constant pressure has a volume of 160 ml at -125*c. what is its volume at 29.0*c?

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

Acontrol during an experiment. might change remains constant does not exist does change