Heartlesskiidkii
18.10.2019 •
Chemistry
What is the frequency of a photon with an energy of 1.99 × 10(19)j?
(h = 6.63 × 101356_files/i0050001.jpg j·s)
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Ответ:
so f = E / h = (1.99 *10^-19)/*(6.63*10^-34)
=3.00*10^14 Hz
Ответ:
bay
cave
ditch (water collection from rain)
estuary
Gyser
lake
marsh
pond