If the half-life of I-131 is 10.4 days, how many moles of I-131 would be left in Mr. Miller's body after 47 days if he was infused with 7.2 grams? (Round your answer to four decimal places) 0.0117

Son los coeficientes de la ecuación al balancerala por el método redox \( \mathrm{KMnO}_{4}+\mathrm{Zn}+\mathrm{H}_{2} \mathrm{SO}_{4} \xrightarrow{\mathrm{KHSO}_{4}+\mathrm{MnSO}_{4}+\mathrm{ZnSO}_{4}+\mathrm{H}_{2} \mathrm{O}} \) \( \begin{array}{llll}\text { a) } 2,5,9,2,2,5,8 & \text { b) } 8,2,5,9,2,2,5 & \text { c) } 5,8,2,5,8,2,2 & \text { d) } 2,5,8,2,5,8,2\end{array} \)

The half-life of radium is 1690 years. If 20 grams are present now, how much will be present in 100 years?

4. \( \mathrm{H}-\mathrm{CH} * \mathrm{O} \) 5. \( \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CO}-\mathrm{CH}_{3} \) 6. \( \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{O}-\mathrm{CH}_{2}-\mathrm{CH}_{2}-\mathrm{CH}_{2}-\mathrm{CH}_{3} \) 7. \( \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{NH}-\mathrm{CH}_{2}-\mathrm{CH}_{2}-\mathrm{CH}_{3} \) 8. \( \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{OH} \) 9. \( \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CH} * \mathrm{O} \) 10. \( \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CH}-\mathrm{F} \) 11. \( \mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CH}_{2}-\mathrm{CO}-\mathrm{CH}_{2}-\mathrm{CH}_{2}-\mathrm{CH}_{3} \)

En la ecuación al quedar balanceada, el coeficiente del agua es: \( \mathrm{KMnO}_{4}+\mathrm{NH}_{3} \xrightarrow{\mathrm{KNO}_{3}+\mathrm{MnO}_{2}+\mathrm{KOH}+\mathrm{H}_{2} \mathrm{O}} \) \( \begin{array}{llll}\text { a) } 2 & \text { b) } 3 & \text { c) } 8 & \text { d) } 5\end{array} \)

If the half-life of I-131 is 10.4 days, how many moles of I-131 would be left in Mr. Miller's body after 47 days if he was infused with 7.2 grams? (Round your answer to four decimal places) 0.0117