A balloon originally has 0.100 moles of helium and has a volume of 0.500 L. If 0.650 grams of He are added to the balloon, what will the new volume be, in L? (Assume temperature and pressure do not change.)

Agas occupies 475 cm^3 at 313k. find its volume at 367k. you must show all of your work to receive credit. be sure to identify which of the gas laws you will be using

Can you me with this i really appreciate it

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.