What is the mole fraction sucrose when 295 g sucrose C 12H 22O 11 (molar mass 342.3 g/mol) is dissolved in 405 g water?

Mole fraction of sucrose is 0.0369.

Explanation:

Mole fraction is the ratio of moles of a particular component to the total number of moles.

Given : 295 g of sucrose is dissolved in 405 g of water.

a)

b)

Putting in the values

Thus mole fraction of sucrose is 0.0369.

the right answer is c i just did the question.

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.