Which of the following processes is endothermic?

Question

a) H2O (g) --> H2O (l)
b) 3O2 (g) + 2CH3OH(g) --> 2CO2(g) + 2H2O(g)
c) H2O (s) --> H2O (l)
d) O2(g) + 2H2(g) --> 2H2O(g)

I a guessing b, since energy has to go into the reaction for water to go from a solid to a liquid.

Answer 1

I agree EXCEPT that isn't B.

Answer 2

Yes, I meant answer C.

Answer 3

Write the symbols of the ions 26protons 23electrons