Question

To create voltage in a battery, you need a difference in potential between compounds. What is the difference between the zinc potential of -0.41 volts and the iron potential of 0.76 volts?

Answer 1

-1.17 volts

Explanation:

The difference between "a" and "b" generally means "a-b". Here, the difference between the potentials is ...

-0.41 V - 0.76 V = -1.17 V

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Sometimes, when we talk about the difference, we mean the positive difference. If that is what is intended here, it is 1.17 volts.