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12 questions from this quiz
Fuel and an oxidising agent
They need external fuel supply
2H2+O2→2H2O2H_{2} + O_{2} \rightarrow 2H_{2}O2H2+O2→2H2O
Water
It is oxidised, losing electrons
H2→2H++2e−H_{2} \rightarrow 2H^{+} + 2e^{-}H2→2H++2e−
Travel through external circuit
Gains electrons and reacts with H+H^{+}H+
Only by-product is water
Highly flammable and needs careful storage
Expensive and complex to develop
Spacecraft like the Space Shuttle
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