4. Complete the reaction : Copper Sulphate (Cuso.) + Iron (Fe)-> + Copper ( Cu) ,1. Zinc Sulphate ( ZnSO2) , 2.Magnesium Sulphate (MgSO) 3. Ferrous Sulphate ( FeSOA),4. None of these​

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.

Kelly has come up with an explanation for why her sister is sometimes in a good mood and other times in a bad mood. she speculates that it is based on the hours of sleep her sister got the previous night. this explanation for her sister's behaviors is an example of a(n)

Avogradoa number was calculated by determining the number of atoms in?