Which is true regarding covalent substances placed in water?

a. covalent substances conduct electricity very well in water. b. the molecules aren't separated from one another by water molecules. c. covalent substances don't dissociate into charged particles. d. the solute particles in the covalent substances are able to overcome the attractive forces between the solvent and the solute
pls : )

Rutherford's experiment indicated that matter was not as uniform as it appears what part of his experimental results implied this idea

Which formula can be used to calculate the molar mass of ammonia (nh3)? molar mass of n + molar mass of h 3 × molar mass of n + molar mass of h molar mass of n + 3 × molar mass of h 3 × molar mass of n + 3 × molar mass of h

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