![hello. could someone please explain how will we calculate the enthalpy change for these reactions? : r/ALevelChemistry hello. could someone please explain how will we calculate the enthalpy change for these reactions? : r/ALevelChemistry](https://preview.redd.it/hello-could-someone-please-explain-how-will-we-calculate-v0-icg4jm3vg9na1.jpg?width=640&crop=smart&auto=webp&s=1f5e6312560b8fa5fa1b998bce97df600a99ef24)
hello. could someone please explain how will we calculate the enthalpy change for these reactions? : r/ALevelChemistry
Calculate enthalpy for formation of ethylene from the following data:(I) C(graphite) + O2 (g) → CO2 (g); Δ H = - 393.5 kJ (II) H2(g) + 12 O2 (g) → H2O(l); Δ
![Use Hess' Law to calculate the enthalpy change for the decomposition of dinitrogen pentaoxide? | Socratic Use Hess' Law to calculate the enthalpy change for the decomposition of dinitrogen pentaoxide? | Socratic](https://useruploads.socratic.org/QNafCnbcT8CbRMAhSFRJ_jjjj.png)