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I NEED HELP PLEASE

I NEED HELP PLEASE

I NEED HELP PLEASE

(OP)
What is the specific Energy for hydrogen and how can i caculate the Mass of hydrogen required to produce electricity for a day at an Eff of 90%

THANKS

RE: I NEED HELP PLEASE

To produce one electron (e-) per day in a 90% efficient fuel cell via the overall reaction

   0.5 H2 + 0.25 O2 --> 0.5 H2O + e-

requires 1.111... molecule of H2 per day, or 3.7 x 10-24 grams/day.

Just multiply if your electrical needs are greater.

RE: I NEED HELP PLEASE

(OP)
please can u explain in detail.

Thanks

RE: I NEED HELP PLEASE

One electron (e-) has a charge of 1.6022 x 10-19 Coulomb.
1 ampere = 1 coulomb/second
Therefore, a 1 Ampere current requires 6.2426 x 1018 electrons/second.

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