A certain sample of coal contains 1.2% sulfur by mass. While the coal is burned the sulfur is converted to sulfur dioxide (SO2). To prevent air pollution, SO2 is treated with calcium oxide (CaO) to form calcium sulfite (CaSO3) as shown in the reaction below
SO2(g) + CaO(s) --> CaSO3(s)
Compute the daily mass (in kilograms) of CaO needed by a power plant that uses 6.60 ×106 kg of coal per day.