A reaction mixture initially contains 0.250 mol of Zns and 0.250 mol of O2. After the mixture has reacted completely, how many moles of the excess reactant are left? 2 2ZnS(s) +30g)2ZnO(s)+ 2S0-(g)
(A) 0.083 mol ZnS
(C) 0.125 mol O
(B) 0.167 mol Zns
(D) 0.250 mol O2

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.

it takes on an electronical energy