1. Below are the balanced equations for the reactions in Parts 1–3. Review the results of your experiments and look closely over the mole ratios of the chemical reactions. Do your experiments reflect the stoichiometric, molar amounts indicated by the reactions? Discuss this using the evidence from your experiments.

Cu(NO3)2(aq) ARROW CU(OH2)(s)+2NaNO3(aq) Note: Cu(OH)2 is a blue precipitate.
FeSO4(aq)+2NaOH(aq) ARROW Fe(OH)2(s)+Na2SO4(aq) Note: Fe(OH)2 is a dark green precipitate.
Fe(NO3)3(aq)+3NaOH(aq) ARROW Fe(OH)3(s) + 3NaNO3 (aq) Note: Fe(OH)3 is a red-orange precipitate.

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.

answerto predict;

the pseudoscience are like beliefs, theories, or like practices that are considered scientific