PLZ HELP Reactants for a certain reaction are combined in a solution. Which solution would have the most successful collisions and so enable the reaction to proceed quickly?

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.

Which of the following is in the lanthanide family? a) uranium b) promethium c) silver d) gold

Which of the following will cause an increase in the acceleration of an object? increase force decrease force increase mass decrease mass