The elements nitrogen and oxygen are diatomic gases in their standard states. therefore, the standard enthalpies of formation of these elements are zero. when nitrogen and oxygen gases react to form one mile of no2, the enthalpy of the reaction is also zero. true or false?

Your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?

C3h8o3 - glycerol major species present when dissolved in water

Which of the following statements about acidic water is true? a. acid has no effect on the h,o molecules. b. the solution contains a larger number of oh ions than h,o ions. c. the solution contains a larger number of h,o ions than qh ions. d. the solution contains an equal number of h,o ions and oh ions. none of the above e.