a 2.50 g sample of neon gas is added to a 5.00 g sample of argon gas in a 10.0-L container at 23 degrees Celcius. calculate the partial pressure of each gas and the total pressure of the mixture

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.

How many moles are in 7.2 x 10^23 carbon molecules?