when 5 moles of ion oxide react with 25 moles of carbon monoxide what is the moles of the product formed when one of the reagents is used in excess

25 moles of product are formed.

Explanation:

The balanced chemical equation will be :

According to stoichiometry :

1 mole of require = 3 moles of

Thus 5 moles of will require=  of

Thus is the limiting reagent as it limits the formation of product and is the excess reagent.

As  4 moles of reactant give = 5 moles of product

Thus 20 moles of reactants will give = of products

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.