Under certain conditions, it is possible to get more work out of a machine than you put into it.

IF that were true, then you could take some of the work from the output,
put it back into the input to keep the machine running, and use the rest
to run the lights and the hot water heater in your house.  That way, you'd
never need to buy energy from the electric company.

You NEVER get more work out of a machine than you put into it.
Never never never.

(Unless there's a battery or a tiny gasoline engine or a hamster
on a treadmill inside.)

Answershe should not have multiplied the sulfur atoms by the subscript 4

B) erini just took the test and it is correct