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An alkaline battery delivers roughly how much more energy than a similar-sized zinc-carbon cell?
AAbout the same again
BSlightly less energy
CThree to five times
DTen to twenty times
Answer & Solution
Correct answer: C. Three to five times
1. Alkaline batteries use alkaline electrolytes, often potassium hydroxide.
2. That chemistry stores more usable energy in the same volume.
3. An alkaline battery can deliver about three to five times the energy of a zinc-carbon dry cell of similar size.
4. Attempting to recharge a non-rechargeable alkaline cell often ruptures it and leaks the potassium hydroxide.
_Source: OpenStax Chemistry 2e (CC BY 4.0), Ch 17 'Electrochemistry', sections 17.1-17.7_
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