If a stock solution has a concentration of 1.58 M, how much volume in mL of the concentrated stock will you need to use to prepare a diluted 0.79 M solution with 203 mL total volume

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

For the following, determine the type of reaction and then give products.

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.