What will most likely be observed when sulfur powder and iron powder are mixed together and then add water

In all living cells dna controls cellular activities by

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 suspect most likely committed the robbery and how do you know