Water is boiled at sea level P 1atm in a coffee maker equip

Water is boiled at sea level (P = 1atm) in a coffee maker equipped with an immersion-type electric heating element. The coffee maker contains 1Litre of water when full. Once boiling starts, it is observed that half the water evaporates in 25 min. Determine the power rating of the electric heating element and how long will it take to heat the cold water from its initial temperature of 18 C to boiling temperature.

Solution

Mass of water is = 1 kg Latent heat of vaporization = 2260 KJ /kg Q = Lv * M = 2260 KJ /kg * 1 kg = 2260 KJ Then, Power = Energy / Unit time = 2260 KJ / 25 minutes = 90.4 ,,,, is this correct...