How much energy (in kJ) do 3.0 moles of photons, all with a wavelength of 680. nm, contain?

Consider the nuclear equation below. 239 > x + 4 he 94 2 what is x? 1.235 cm 96 2.243 u 92 3.235 u 92 4.243 cm 96

Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally

Voltaic cells produce a positive overall charge. what does this indicate? a. the reaction is likely to be endothermic. b. the reaction is spontaneous. c. the reaction is not likely to occur. d. the reaction is not spontaneous.