An atom of nickel has a mass number of 58. how many neutrons are in its nucleus?

Nickel has an atomic number of 28
so the number of neutrons = mass number - atomic number = 58 -28 = 30

This is what i found on google “when one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released, and atp is converted to adenosine diphosphate (adp). likewise, energy is also released when a phosphate is removed from adp to form adenosine monophosphate (amp).” i hope this you .