Which statement best describes the difference between endothermic and exothermic reactions? they are opposites because endothermic reactions require energy and exothermic reactions release energy. they are opposites because endothermic reactions release energy and exothermic reactions require energy. they the same because they are both ways of forming precipitates. they the same because they are both ways of forming gasses.

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.