In a volume of 0.400 dm^3 of CH2CL2 there are 3.73*10^24 molecules at 25 degree celsius. Calculate
(A) The density of the substance at 25 degree celsius, expressed in g.cm^3.
(B) The number of atoms present in 425g of CH2CL2. (Solve by means of complete numerical development without omitting the statements or the units)