The sign of ∆hrxn and ∆srxn for several different reactions are provided. In which case is the reaction spontaneous at high temperatures and nonspontaneous at low temperature?

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

The precision of a laboratory instrument is ± 0.05 g. the accepted value for your measurement is 7.92 g. which measurements are in the accepted range? check all that apply. 7.85 g 7.89 g 7.91 g 7.97 g 7.99 g

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?