What is the iupac name of ch3ch2ch2ch2ch2ch3

Why does his teacher ask him to balance the equation by including the correct coefficient

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.

Helium decays to form lithium. which equation correctly describes this decay?