An acid a. has a low ph in solution. b. turns red litmus paper to blue. c. releases hydroxyl ions in solution. d. has more hydroxyl than hydrogen (or hydronium) ions.

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

Ascientist conducted an experiment and discovered that certain plants grow faster when given a particular amount of fertilizer. anouther scientist conducted the same experiment and got similar results. which concept does this best illustrate? a) repetition b) replication c) precision d) validity