In order to determine if two atoms are copper (CU) atoms, what must be the same for each? the number of valence electrons
the number of protons
the charge of the atom
the size of the atom

What is the equilibrium constant of aa+bb=cc+dd

Which characteristic of water it form droplets? a. low specific heat b. nonpolar structure c. high surface tension d. ability to dissolve substances

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.