Explain, using prose and any necessary chemical and/or mathematical arguments, why we use (o2 + 3.76 n2) as the chemical makeup of air.

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.

No copying 15 pts how does a free-body diagram tell you about the net force on an object?

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.