*PLEASE HELP:( 68 POINTS* Nitrogen combines with oxygen to form several different compounds containing only nitrogen and oxygen. Calculate the empirical formulas of the compounds if they contain the following percentages of nitrogen: a) 30.43% b) 25.93% c)36.84% d) 46.67% e) 63.63% (Hint: you will have 5 answers. You will need to subtract each % from 100 in order to find the % oxygen)

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.

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.