Which of the following is not a definition of an acid? a substance that increases the hydroxide ion concentration of a solution a hydrogen ion donor in a reaction a substance that increases the hydronium ion concentration of a solution an electron-pair acceptor in a reaction

Calculate the percent composition by mass of each element in al(oh)3. use at least three significant figures.

The zinc within a copper-plated penny dissolves in hydrochloric acid if the copper coating is filed down in several spots (so that the hydrochloric acid can reach the zinc). the reaction between the acid and the zinc 2h+(aq)+zn(s)→h2(g)+zn2+(aq) . when the zinc in a certain penny dissolves, the total volume of gas collected over water at 25 °c is 0.947 l at a total pressure of 743 mmhg . (vapor pressure of water is 23.78 mmhg at 25 °c .) what mass of hydrogen gas is collected? answer in appropriate significant figures

Using the periodic table choose the more reactive nonmetal s or as