Which kind of investigations never include a hypothesis?

experimental

systemic

descriptive

comparative

What approach is required to balance the objectives of sustainable development? balancing the objectives of sustainable development requires a(n) .

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.

What is the approximate vapor pressure when the gas condenses at 70 degrees celsius