When 70.4 g of benzamide (c7h7no) are dissolved in 850. g of a certain mystery liquid x , the freezing point of the solution is 2.7°c lower than the freezing point of pure x. on the other hand, when 70.4 g of ammonium chloride (nh4ci) are dissolved in the same mass of x, the freezing point of the solution is 9.9 °c lower than the freezing point of pure x.
a) calculate the van't hoff factor for ammonium chloride in x. be sure your answer has a unit symbol, if necessary, and round your answer to 2 significant digits.