How much concentrated 2.28 M sulfuric acid is need to prepare 7.8 mL of a 11.60 M solution​

How many moles of carbon dioxide will form if 2.5 moles of c3h8 is burned

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

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.