What would be the molarity of a solution made from 86.5 g Ca(OH)2in 200.0 ml of water?

5.84 M

Explanation:

First you have to convert grams of Ca(OH)2 to moles,

since molar mass is 74.093 g/mol, we divide the amount you have by the molar mass: (86.5 g)/(74.093 g/mol)= 1.1675 moles of Ca(OH)2

Then, knowing molarity is (moles/ volume in liters), we have to convert 200 mL to liters, which is 0.200 L

Putting it together, molarity = (1.1675/0.200) M= 5.84 M

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///carbon;