An “instant cold pack” contains water and an inner pouch with 46.9 g of KNO,. When the inner pouch is
broken and all of the KNO, is completely dissolved in water, the dissolving process absorbs 16.2 kJ of energy
(which “feels cold”). Calculate molar heat of solution (AH ) for this process in kJ/mol of KNO,.
" include correct sig figs, units, AND correct + or - sign

catya your not at all which answer i've seen you do this on another question!

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.