How many protons are in an isotope of sodium with a mass number of 25?

How many protons are in an isotope of sodium with a mass number of 25? 11

Spontaneity tell us the direction of the reaction, but not how fast it goes. gibbs free energy brings together enthalpy, entropy and temperature in one easy formula. g = h - ts. and, finally the sign of delta g is always negative for a spontaneous reaction.

What’s the question