A volume V_aq of aqueous solution containing a mass m_A of compound A is extracted with dichloromethane. A volume V_org of dichloromethane is available. The partition coefficient of compound A between dichloromethane and water is denoted by k (defined as the ratio of the concentration of A in dichloromethane to that of A in the aqueous phase. The question is whether it is better to do one extraction with volume V_org of dichloromethane or three extractions each with volume V_org/3 of dichloromethane in order to maximize the mass of compound A transferred to the organic phase. Using the input data from Table 1, calculate m_AS, the total mass of compound A extracted after a single extraction with volume V_org.
Using the input data from Table 1, calculate m_AT the total mass of compound A extracted after three extractions, each with volume V_org/3

i'm pretty sure it is letter c.) car

2b2t

explanation:

2b2t

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: option (a) is the correct answer.

explanation:

the measurement of hydrogen ions in a solution is known as ph.

if ph of a solution is less than 7 then the solution is acidic. if ph of a solution is greater than 7 then the solution is basic.

when the ph of a solution equals 7, then the solution is considered as neutral.

the ph of pure water is 7, therefore, it means that concentration of hydronium ions equals that of hydroxide ions.