A chemical reaction is run in which 257 joules of heat are absorbed and the internal energy changes by 905 joules. Which of the following could represent this reaction?
a) Endothermic reaction with a positive change in enthalpy
b) Exothermic reaction with a negative change in enthalpy
c) Endothermic reaction with a negative change in enthalpy
d) Exothermic reaction with a positive change in enthalpy
