PLS HELP!! Use the reaction to answer the question.
N2O4(g) + energy = 2N02(g)
The system is at equilibrium, but then it is subjected to an increase in pressure. Which change will happen? (1 point)

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.

Apush or pull that moves or changes and object when to objects touch

Connect the whole numbers on the periodic table to indicate what they represent?