An ice cube with a mass of 48.6 g at 0.0 ∘C is added to a glass containing 391 g of water at 45.0 ∘C . Determine the final temperature of the system at equilibrium. The specific heat capacity of water, s , is 4.184 J/g⋅∘C , and the standard enthalpy of fusion, Δ∘fus , of water is 6.01×103 J/mol . Assume that no energy is transferred to or from the surroundings.

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .

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.

the answer is c.the valence of the atoms combine .