The Fertile Crescent refers to:

an area of settlements that were impacted when the moon took on a crescent shape

civilizations which developed along rivers from the Mediterranean Sea to the Persian Gulf

the aid organization

the ability to irrigate crops

100mg magnesium reacts with 20ml of 1.0m hcl

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 empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5