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.

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j