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Vladimir79 [104]
3 years ago
10

What is the amount of heat released when 25g of water cools 12.5 degrees C ?

Chemistry
1 answer:
Over [174]3 years ago
4 0
Water can't cool at a single temperature. It must start at a higher temperature, and drop to a lower temperature in order to cool. Unless we know the other temperature, there is no way to calculate the amount of thermal energy released.
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Direct electron transfer from a singlet reduced species to a triplet oxidizing species is quantum-mechanically forbidden
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Direct electron transfer from a a singlet reduced species to a triplet oxidizing species is quantum-mechanically forbidden.

<h3><u>Transfer from singlet to triplet:</u></h3>
  • Either an excited singlet state or an excited triplet state will occur when an electron in a molecule with a singlet ground state is stimulated (through radiation absorption) to a higher energy level.
  • All electron spins in a molecule electronic state known as a singlet are coupled.
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  • The excited electron and ground state electron are parallel in a triplet state because they are no longer coupled (same spin).
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