An animal has many legs, a very hard exoskeleton, and lives underwater. it is most likely

an insect
an arachnid
a crustacean
a sponge

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

Is a pencil falling to the floor anon contact force, a force, or a contact force