Water is boiled in a 1-l coffee maker with an immersion-type electric heating element at atmospheric pressure. it was observed that 12-l has evaporated in 13 min once boiling starts. a) if the heating element is rated based on power required to evaporate water, determine the rating of the heating element. b) for the same heating element, how long will it take to raise the 1-l temperature from 18 °c to boiling point at the same atmospheric pressure? take liquid water density pair = 1000 kg/m & specific heat pwater = 4.18 kj/(kg: "k).