Some headache medicines are fine powders that are dissolved in water and then ingested. these medicines claim they work faster than other medicines. could this be true? why or why not?

a. false: chemicals react at the same rate in the body, as determined by body temperature.

b. false: these would actually slow the reaction because it would become less concentrated

c. true: a solid will react quicker in the liquid environment of the stomach than a gas or liquid

d. true: a fine powder dissolves quickly, this solution can more quickly be absorbed and begin working

i mean it can be true and it cant at the same time. i mean medicine doesn't always work on a person. but it is said that medicine that is in powder form is more efficient.

but i believe its D or A

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.

answeridentity;