Combustion of carbon with hydrogen Can coal (carbon) be "burned" in a hydrogen atmosphere? I know it would not match the definition of "combustion".

But is the reaction $$\ce{C +2H2 -&gt;CH4}$$ exothermic?

(I'm fairly convinced this is a duplicate, but I didn't find any question like that.)
The formation reaction of CH4 is exothermic. The heat of formation is : -75 kJ/mol