A chemistry student was asked to calculate the number of moles of iron required to react with 1.20 mol of oxygen to produce iron(III) oxide. His calculations is shown below. Is the student correct? Use evidence to support your answer.

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.