The number of endothermic processes from the following is ______.
A. \( \mathrm{I_2(g) \rightarrow 2I(g)} \)
B. \( \mathrm{HCl(g) \rightarrow H(g) + Cl(g)} \)
C. \( \mathrm{H_2O(l) \rightarrow H_2O(g)} \)
D. \( \mathrm{C(s) + O_2(g) \rightarrow CO_2(g)} \)
E. Dissolution of ammonium chloride in water
