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)

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

\( \mathrm{LiOH}+\mathrm{HBr} \rightarrow \mathrm{LiBr}+\mathrm{H}_{2} \mathrm{O} \) If you start with 10.0 grams of lithium hydroxide, how many grams of lithium bromide will be produced?

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

3) \( \mathrm{Cr}_{2}\left(\mathrm{SO}_{4}\right)_{3}+\mathrm{KI}+\mathrm{KIO}_{3}+\mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{Cr}(\mathrm{OH})_{3}+\mathrm{K}_{2} \mathrm{SO}_{4}+\mathrm{I}_{2} \) Semireacción de oxidación Agente oxidante

Balancea por óxido - reducción las ecuaciones siguientes: \( \begin{array}{l}\text { 1) } \mathrm{HNO}_{3}+\mathrm{S} \\ \begin{array}{l}\text { Semireacción de oxidación } \\ \text { Agente oxidante } \longrightarrow\end{array} \\ \mathrm{NO}_{2}+\end{array} \mathrm{H}_{2} \mathrm{SO}_{4}+\mathrm{H}_{2} \mathrm{O} \) \( \begin{array}{l}\text { Semireacción de reducción } \\ \text { Agente reductos }\end{array} \)