49.which of the following statements regarding chemical equilibrium is true?

equilibrium is shown with a single arrow and/or an equal sign.

a system at equilibrium maintains the concentrations of all reactants/products over time.

a system at equilibrium stops.

equilibrium is signified only with an equals sign.

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

it would only be the stuff in module eight so you need to study all the lessons in that you also could check the flvs

hope this : )