Can red cabbage juice be used as a pH indicator? Make a one sentence hypothesis. Then make your experiment

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain 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.