Interstate 285 around atlanta is 63.98 mi and is about 80. ft across both directions of traffic. if there are 2.5 inches of snow (kf = 1.86 °c/m, density = 0.150 g/cm3) accumulated on the interstate, how many metric tons of cacl2 are required to alter the freezing point from 32 degrees f to 21 degreesf? ( 1 mi = 1609.34 m, 2.54 cm = 1 in, 12 in = 1 ft, 1000 kg = 1 metric ton)