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ChemistryChemical KineticsMiscellaneous/MixedEasy2 minPYQ_2020

ChemistryEasynumerical

If 400 gm radioactive Iodine is taken initially. Then calculate the amount of $_{53} I^{128} (t_{\frac{1}{2}} = 25 min)$ left after 75 minutes

Answer:

50.00

Solution:

$\frac{N}{N_{0}} = {(\frac{1}{2})}^{\frac{T}{t_{\frac{1}{2}}}} \frac{N}{N_{0}} = {(\frac{1}{2})}^{\frac{75}{25}}$

$N_{0} = 400 g$

$N = 400/8$

$N = 50 gm$

Stream:NTA_ABHYASSubject:ChemistryTopic:Chemical KineticsSubtopic:Miscellaneous/Mixed

⏱ 2mℹ️ Source: PYQ_2020

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