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A light emitting diode (L.E.D.) emits photons with an energy of J.What is the energy per mole of photons emitted?
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A type of check for which the issuing bank guarantees the availability of funds by verifying and setting aside the check amount.
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The individual or entity that creates or signs a promissory note, committing to pay the specified amount.
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The individual or entity that creates, signs, and issues a promissory note, thereby promising to pay a certain sum to a specified person.
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