100 Points! PLZ HELP

Which statement best describes the model below?

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]

Arrange the elements in order of increasing electronegativity. use the periodic table to you arrange the elements. p o k mg