During combustion reaction of propane (C3H8) the amount of CO2 gas was 10 grams. Calculate the mass of burnt propane, oxygen and water from the reaction? Write and balance the equation. Pls write with explanation)))

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.

Is 9 correct? and can someone me with 10? it’s due tomorrow, you

If a gas has an initial pressure of 101kpa and a volume of 10l, then it expands to a volume of 20l, what is the new pressure?