Which element in period 4 is the most chemically active non-metal?

Amonoprotic acid is an acid that donates a single proton to the solution. suppose you have 0.140 g of a monoprotic acid dissolved in 35.0 ml of water. this solution is then neutralized with 14.5 ml of 0.110 m naoh. what is the molar mass of the acid?

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

Calculate the number of molecules present in 0.750 mol of mgo.