Part A In this activity, you'll grow bacteria in four prepared petri dishes. The first petri dish will have a sample

swabbed from your unwashed hands. The second petri dish will have a sample swabbed from your hands

after washing them with regular soap. The third petri dish will contain another sample from your

unwashed hands. The fourth petri dish will contain a sample taken after cleaning your hands with hand

sanitizer. What do you think the results will be? Write down your predictions for which samples will show

the greatest and least bacteria growth.

B BI y XX Font Sizes

А

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i believe the answer is true.

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.

answer; 4 electrons;