Remember this:
atomic mass= atomic number + number of neutrons
The atomic number (same thing as number of protons) in this case is 15. The atomic mass is 31.
So, we subtract 15 from 31 to find the number of neutrons.
31-15=16
16 neutrons!!!
30% should be the percentage of oxygen if the total mass of fe2o3 is 160.
Answer: most store-bought isnt
Explanation:
there typically a lot of addivitves
The rock that is being studied is
