What type of change occurs when liquid water evaporates to water vaporWhat type of change occurs when liquid water evaporates to water vapor

C3h8o3 - glycerol major species present when dissolved in water

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy

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