Two thermocol balls held close to each other move away from each other. When they are released, name the force which might be responsible for this phenomenon. Explain

Litmus paper is made from water-soluble dyes which are extracted from lichens. this paper is used as an acid-base indicator. which of these common household substances would turn blue litmus paper red? a) bleach b) lye c) soap d) vinegar

37.0 °c = °f (human body normal temperature)

Calculate the mass of 0.750 mol of the following substance. na3po4. , i'm not quite sure on how to set up the problem to solve! : (