An empty beaker was found to have a mass of 50.49 grams. A hydrate of sodium carbonate was added to the beaker. When the beaker and hydrate was weighed again, the new mass was 62.29 grams. The beaker and the hydrated compound were heated and cooled several times to remove all of the water. The beaker and the anhydrate were then weighed and its new mass was determined to be 59.29 grams.

catya that's not even a b or c

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.