When 78.6 g of urea ch4n2o are dissolved in 700. g of a certain mystery liquid x, the freezing point of the solution is 4.9 °c lower than the freezing point of pure x. on the other hand, when 78.6 g of sodium chloride are dissolved in the same mass of x, the freezing point of the solution is 8.5°c lower than the freezing point of pure x. calculate the van't hoff factor for sodium chloride in x. be sure your answer has a unit symbol, if necessary, and round your answer to 2 significant digits.

An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.

Tell me the iupac names of the following alcohols:

Amines are good nucleophiles, even though they are neutral molecules. how would the rate of an sn2 reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? amines are good nucleophiles, even though they are neutral molecules. how would the rate of an reaction between an amine and an alkyl halide be affected if the polarity of the solvent is increased? because both reactants in the rate-limiting step are neutral, the reaction will be faster if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will be slower if the polarity of the solvent is increased. because both reactants in the rate-limiting step are neutral, the reaction will occur at the same rate if the polarity of the solvent is increased. request answer