Whats the mass of an atom that contains 28 protons, 28 electron, and 34 neutrons

The mass  of  an tom that  contains  28 protons, 28 electrons and  34 neutrons  is 62  amu

Explanation

The mass  of the atom ( mass  number )  is total number  of protons +  total number  of  neutrons.

The units of mass number  is amu ( atomic mass  units)

total number  of protons= 28

total number  of neutrons =34

mass of atoms is therefore =  28 + 34=  62  amu

precipitation

explanation:

when it goes from cloud to rain/back to earth in the form of rain

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.