Cleaning agents are complex mixtures of chemical components, each with its own specific purpose. The components have very precise measurements to ensure that the cleaning agent has the right properties. What is a cleaning agent an example of? (Hint: it's a type of mixture). Enter your answer

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

If the half-life of I-131 is 7.4 days, how many days would it take for only \( 3.2 \times \) \( 10^{-2} \) grams of \( 1-131 \) to be left in Mr. Miller's body if Dr. Goodie started him on an initial dose of 5.5 grams?

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

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