Will mark brainliest
Two masses exerting a force on each other is an example of .

Which phrase best completes the sentence?

Kepler's law

heliocentric theory

universal law of gravitation

geocentric theory

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

Calculate the ratio of h+ ions to oh– ions at a ph = 7. 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 = 7. are they the same? why or why not? record your comparison in table a. what is the concentration of h+ ions at a ph = 7? mol/l what is the concentration of oh– ions at a ph = 7? mol/l what is the ratio of h+ ions to oh– ions at a ph = 7? : 1