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An inventor claims to have perfected a hydrogen?oxygen fuel cell, H₂ +0:5(O₂) → H₂O(l), that produces 300 MJ per kgmole of hydrogen consumed at 25.0°C and 0.100 MPa. Is this possible?

If not, what is the maximum possible power output? Assume each component in the reaction is at 25.0°C and 0.100 MPa.

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