1 kg of cold water at 15°C is mixed with 1 kg of warm water at 31°C. What will be the final temperature of the water, in °C?

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

Apump contains 0.5 l of air at 203 kpa. you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump

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.