A Household Humidifier Continuously Takes Water in at 20

Multiple Choice

A household humidifier continuously takes water in at 20.0 °C at a rate of 5.60 × 10^-5 kg/s and heats it until it evaporates. If the cost of electricity is $ 0.14/kWh, what is the daily cost of operating the humidifier? Notes: one kWh = 3.60 × 10⁶ J; and for water, the specific heat capacity is 4186 J/(kg · C°) ; the latent heats of fusion and vaporization are 3.35 × 10⁵ J/kg and 2.26 × 10⁶ J/kg, respectively.

A) $ 0.31
B) $ 0.49
C) $ 0.58
D) $ 0.65
E) $ 0.70