When 1.645 g of white phosphorus are dissolved in 75.5 g of the solution boils at 46.709° c, whereas pure CS2 boils at 46.300°C.The molal boilng-point elevation constant for CS2 boils at 46.300°C.The molal boiling-point elevation constant for CS2 is 2.34°C/m.
Calculate the molecular formula.