Heat that flows by conduction is the transfer of thermal energy between substances in contact. What must occur for this to happen?

What is the mass of each element in a 324.8 sample of co2

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.

The valence of aluminum is +3, and the valence of the chlorine is -1. the formula fir the aluminum chloride is correctly written as