Of the molecules alcl3 and albr3, which has bonds that are more polar?

The correct answer is that AlCl₃ is more polar in comparison to AlBr₃.

Explanation:

The electronegativity difference of the aluminum and chlorine atoms in AlCl₃ is 1.55, while the electronegativity difference of the aluminum and bromine atoms in AlBr₃ is 1.35. Both the molecules possess a substantial amount of difference in the electronegativity of atoms, which signifies that both these molecules exhibit polar nature. However, the electronegativity difference in AlCl₃ molecule is more than the electronegativity difference in AlBr₃. Thus, AlCl₃ is more polar in comparison to AlBr₃.

"standard molar enthalpy:

h2o ( liquid water ) : - 285.8 kj/mole

h2o ( water vapor ) : - 241.8 kj / mole.

δhrxn = - 241. 8 - ( - 285.8 )= -241.8 + 285.8 = 44.0

answer: 44.0 kj"

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.