The answer is 14.8 hoped this helped
In an exothermic reaction, heat is produced along with products. But in endothermic reaction, heat is absorbed. If the number of products is less than the sum of the enthalpies of the reactants, the reaction will be exothermic. If the number of products is more than the sum of the enthalpies of the reactants, the reaction is endothermic.
<span>Ionic bonding between sodium and phosphate ions.</span>
Electron structure of sodium:
₁₁Na: 1s²2s²2p⁶3s¹
The answer is A, because of the chemical reaction taking place color can change (as in this case). Hope it helps!
