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Question

How many photons will be required to raise the temperature of 2.0 g of water by 2.5 K?
15 years ago

Answers

Dr Russ
Do you happen to know the wavelength or frequency of the photons?

If you do then use E=hf to give you the energy of one photon.

specific heat of water is 4.18 J/g/K

so energy required is
4.18 x 2.0 x 2.5 J

divide this value by the energy of one photon.

15 years ago
liz
an electron jumps from the sixth energy level to the second energy level.

Determine the energy change associated with this eled=ctron trasition.
13 years ago

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