Solve for the calculations A and B

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

Which of the following units is not an official si unit? mole liter kilogram ampere

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.