A train is traveling at a speed of 50km/hr. How. many hours will it take the train to travel 800 km?

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

Calculate the ratio of h+ ions to oh– ions at a ph = 6. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 6. are they the same? why or why not? record your explanation in table a. what is the concentration of h+ ions at a ph = 6? mol/l what is the concentration of oh– ions at a ph = 6? mol/l what is the ratio of h+ ions to oh– ions at a ph = 6? : 1

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?