Am insulated sealed tank that is $2ft2$ in volume holds $8lb$ of water at $100oF.$ A $\%hp$ stirrer

mixes the water for $1$ hour. What is the fraction vapor at the end of the hour? Assume all the

energy from the stirrer enters the tank.

a$.$ State what the system you select is

b$.$ Specify open or closed

c$.$ Draw a picture

d$.$ Put all the unknown or calculated data on the picture in the proper place.

e$.$ Write down the energy balance and simplify it as much as possible.

f$.$ Calculated W

g$.$ List the equations with data that you would use to solve the problem.

h$.$ Solve the problem.