When does water act as an acid and a base? water can donate a proton to become a hydronium ion or hydroxide ion. water can accept a proton to become a hydronium ion, or donate a proton to become a hydroxide ion. water can accept a proton to become a hydronium ion or a hydroxide ion. water can donate a proton to become a hydronium ion, or accept a proton to become a hydroxide ion.

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.