What does ch4 represent in the balanced chemical equation shown below?
c + 2h2 ch4

a. one atom of ch4
b. five atoms of ch4
c. one molecule of ch4
d. 1g of ch4

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.