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.
ගහ
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)

1 answer

A. H2O (water)