Answer:
Carbon dioxide is composed of one carbon atom covalently bonded to two oxygen atoms. It is a gas (at standard temperature and pressure) that is exhaled by animals and utilized by plants during photosynthesis. Carbon dioxide, CO2, is a chemical compound composed of two oxygen atoms and one carbon atom
Explanation:
Answer:
The standard enthalpy of formation of methane is -67.2 kJ/mol.
Explanation:
...[1]
...[2]
...[3]
Since, the bond formation is taking place energy will release that id reaction will be an exothermic reaction
![\Delta H^o_{3,rxn} =4\times (-414 kJ/mol)=-1656 kJ/mol](https://tex.z-dn.net/?f=%5CDelta%20H%5Eo_%7B3%2Crxn%7D%20%3D4%5Ctimes%20%28-414%20kJ%2Fmol%29%3D-1656%20kJ%2Fmol)
...[4]
Using Hess's law:
[4] = [1] + [2] + [3]
![\Delta H^o_{4,rxn} =\Delta H^o_{1,rxn} +\Delta H^o_{2,rxn} +\Delta H^o_{3,rxn}](https://tex.z-dn.net/?f=%5CDelta%20H%5Eo_%7B4%2Crxn%7D%20%3D%5CDelta%20H%5Eo_%7B1%2Crxn%7D%20%2B%5CDelta%20H%5Eo_%7B2%2Crxn%7D%20%2B%5CDelta%20H%5Eo_%7B3%2Crxn%7D%20)
![=716 kJ/mol+872.8 kJ/mol +(-1656 kJ/mol)=-67.2 kJ/mol](https://tex.z-dn.net/?f=%3D716%20kJ%2Fmol%2B872.8%20kJ%2Fmol%20%2B%28-1656%20kJ%2Fmol%29%3D-67.2%20kJ%2Fmol)
The standard enthalpy of formation of methane is -67.2 kJ/mol.
Actuando sigue second jab second
Answer:
C is the answer I believe.