Which of the following forms of energy is demonstrated through the process of combustion?
A.
Chemical energy
B.
Mechanical energy
C.
Thermal energy
D.
Electrical energy
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【简答题】已知: MnO 4 - +8H + +5e==Mn 2+ +4H 2 O , E y =1.51V , MnO 2 + 4H + +
2e == Mn 2+ + 2H 2 O E y =1.23V ,则电对 MnO 4 - /MnO 2 的 E y 为:A. 0.28V B. 1.7V C. 5.05V D. 3.28V