ANSWER:
try the first one!<em> ok </em>
if i answer it right you have to make me brainliest OK DON"T LIE YOU SAID THAT OK THE ANSWER IS UP THERE and is this a quiz or a assigment!! or a exam or something like that
Answer:
C
Explanation:
A fuel cell uses both hydrogen and oxygen as fuels. At the cathode oxygen is reduced to water according to the equation
O2+4H^+ +4e ------>2H2O
And hydrogen is oxidized at the anode:
2H2------>4H^+ +4e
Fuel cells produce only water as a by product hence they are environment friendly
Answer:
B
Explanation:
The four factors that increase the rate of the reaction:
1.Concentration of the reactants
2.Size of the particles
3.Temperature
4.Catalyst