Atank containing 45 kg of liquid water initially at 45oc has one inlet and one exit with equal mass flow rates. liquid water enters at 45oc and a mass flow rate of 270 kg/h. a cooling coil immersed in the water removes energy at a rate of 7.6 kw. the water is well mixed by a paddle wheel so that the water temperature is uniform throughout. the power input to the water from the paddle wheel is 0.6 kw. the pressures at the inlet and exit are equal and all kinetic and potential energy effects can be ignored. plot the variation of water temperature with time.
determine the t(t) of the tank.

In general metals get as you move from left to right across the periodic table.

Why must humans find substitutes for many minerals found on earth? (a) form at an extremely slow rate (b) controlled by other countries (c) too deep in the earth to collect

A0.10 m aqueous solution of sodium sulfate is a better conductor of electricity than a 0.10 m aqueous solution of sodium chloride. which of the following best explains this observation? (a) sodium sulfate is more soluble in water than sodium chloride. (b) sodium sulfate has a higher molar mass than sodium chloride. (c) to prepare a given volume of 0.10 m solution, the mass of sodium sulfate needed is more than twice the mass of sodium chloride needed. (d) more moles of ions are present in a given volume of 0.10 m sodium sulfate than in the same volume of 0.10 m sodium chloride. (e) the degree of dissociation of sodium sulfate in solution is significantly greater than that of sodium chloride.