From your calculations, which reaction experiment had closest to stoichiometric quantities? How mar moles of \( \mathrm{NaHCO}_{3} \) and \( \mathrm{HC}_{2} \mathrm{H}_{3} \mathrm{O}_{2} \) were present in this reaction?

Question 13 (1 point) \( \begin{array}{l}\text { Hydrogen sulphide gas can be deadly when in concentrations above } 650 \text { PPM (parts } \\ \text { per million). Express this value as a percentage. }\end{array} \)

Question 12 (1 point) \( \begin{array}{l}\text { 4) Listen } \\ \text { Medium carbon steel has a carbon content of } 0.35 \% \text {. What is the fractional portion } \\ \text { of carbon in this steel? }\end{array} \).

d) \( \mathrm{C}_{4} \mathrm{H}_{10} \mathrm{O}+\mathrm{O}_{2} \rightarrow \quad \mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O} \)

4) En un huerto de frutillas se utiliza como agua de riego el agua potabilizada que cuenta con 4 ppm de concentración de Cloro (CI), en verano el agricultor riega \( 15 \mathrm{~mm} / \) riego, junto a ello ap \( 25 \mathrm{~kg} / \mathrm{KCl} / \mathrm{ha} \) ( 25 kg de cloruro de potasio por hectárea) ¿cómo se comporta el cultivo frente aplicación? Recuerde la conversión \( \mathrm{ppm}=\mathrm{mg} / \mathrm{L}=\mathrm{g} / \mathrm{m3} \) ¿Qué concentración de cloro en ppm?

From your calculations, which reaction experiment had closest to stoichiometric quantities? How mar moles of \( \mathrm{NaHCO}_{3} \) and \( \mathrm{HC}_{2} \mathrm{H}_{3} \mathrm{O}_{2} \) were present in this reaction?