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In the 1960s, the Apollo spacecraft got electric power from fuel cells. Fuel cells operate on a chemical reaction that combines hydrogen and oxygen
gas. The astronauts got both power and another necessity from the fuel cell reaction.
hydrogen + oxygen -> energy (power) + ?
Which substance did the astronauts get from the reaction?
A. H2O (water)
B. 02 (oxygen)
c. C6H12O6 (glucose)
D. CO2 (carbon dioxide)
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answered1 month ago