What visible evidence indicates that a solution is saturated?

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.

Why are people not able to skip a dive to the deepest part of the ocean

Will mark brainliest how many electrons can be held in the energy level n = 4?