Shannon needs 9 feet of ribbon for an art project. how many inches of ribbon should she buy if she is making 4 projects

432 inches

Explanation:

Given : length of ribbon needed by Shannon for an art project = 9 feet

As we know : 1 feet = 12 inches

9 feet =

Thus if for 1 project , length of ribbon required is = 108 inches

For 4 projects , length of ribbon required is =

Thus 432 inches of ribbon should she buy if she is making 4 projects.

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;