Consider the reaction. mc026-1.jpg at equilibrium at 600 k, the concentrations are as follows. [hf] = 5.82 x 10-2 m [h2] = 8.4 x 10-3 m [f2] = 8.4 x 10-3 m what is the value of keq for the reaction expressed in scientific notation?

2.1 x 10⁻².

Explanation:

Generally, the equilibrium constant (Keq) is the product of the concentration of the reaction products divided by the product of the concentration of the reaction reactants, each term is raised to a power equal to its coefficient in the balanced chemical reaction.For the given reaction: 2HF → H₂ + F₂,

Keq = [H₂][F₂] / [HF]²,

Keq = [H₂][F₂] / [HF]² = [8.4 x 10⁻³][8.4 x 10⁻³] / [5.82 x 10⁻²]² = 2.1 x 10⁻².

Newton’s universal law of gravitation states that all objects attract each other with a force -directly- proportional to the product of their masses and -inversely- proportional to the square of the distance between their centers. When considering objects on the surface of the Earth, the force is -away from directly-proportional to the product of the mass of the object and the -acceleration- due to -gravity-at the Earth’s surface. Since the Earth is -larger- than ant object under consideration, the object is drawn -toward- the Earth.