A gas company in Massachusetts charges $1.30 for 15 ft3 of natural gas (CH4) measured at 20 oC and 1.0 atm. Calculate the cost of heating 200 mL of water (enough to make a cup of coffee or tea) from 20 oC to 100 oC. Assume that only 50 percent of the heat generated by the combustion is used to heat the water; the rest of the heat is lost to the surroundings.