200g of water at 30C is put in a 1000 W (J s) microwave oven For simpl...

200g of water at 30Â°C is put in a 1000 W (J/s) microwave oven. For simplicity...

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Physics

200g of water at 30Â°C is put in a 1000 W (J/s) microwave oven.For simplicity assume that all the energy produced by the microwavegoes into the water. The microwave runs for 2 minutes. Constantsfor H2O: TMP=0Â°C, TBP=100Â°C, Î”Hmelt = 333.5 kJ/kg, Î”Hvap = 2257kJ/kg, cliquid=4.18 kJ/kgK, cgas=1.87 kJ/kgK. a) Calculate thetotal amount of energy transferred to the water. Show your work. b)Draw the Three-Phase Diagram (temperature versus energy added) andlabel the initial state of this process. Label the phase(s) of eachsection on the diagram and write down the corresponding energyequations in terms of relevant variables. This part is meant tohelp guide you through part c). c) At the end of the process, whatis the final temperature and phase of H2O? If the final state ismixed phase, calculate the mass of each phase. You might find ithelpful to draw energyinteraction diagram(s). Show yourwork.

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4.2 Ratings (698 Votes)

aThe total energy produced by the microwave in 2 minutes ie 120seconds isSince all the energy produced by microwave is assumed to betransferred to the water the total value of energy See Answer

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