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The quantum yield for decomposition of ...

The quantum yield for decomposition of HI id 0.2 .In an experiment 0.01 moles of HI are decomposed .
Find the number of photons absorbed.

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The correct Answer is:
`3xx10^(22)`
No. of moles jof photon `((1)/(0.2))xx("moles of HI")`
`((0.01)/(0.2))=(0.5)`
No, of photons `=6xx10^(-23)xx0.5=3xx10^(22)`
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