How many grams of Al2O3 can form from 34.6 grams of Al

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.

What are the similarities between compounds and mixtures?

Ajar contains a certain substance. which observation would show that the substance must be either a solid or a liquid?