Assume that 8.5 L of iodine gas are produced at STP according to the following equation: 2KL+Cl2= 2KCl + I2

How many moles of Kl were used?
How many grams of Kl were used?

120,630,890

step-by-step explanation:

110+10=120,620+10=630,880+10=890

a electronegativity decreases beacuse the size of nucleus is bigger.

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.