What is the second law of thermodynamics? use this law to describe why your feet got cold, not hot, when you put them into the water.

Which graph best represents the relationship between the electric current and the rate at which a magnet is turning inside an electric generator?

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

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?