2) En un alto horno se procesa un óxido de Hierro con Antracita (Carbono) para producir Arrabio (Hierro Fundido). Las reacciones estequiométricas son reacciones consecutivas: A) \( \mathrm{FeO}+\mathrm{CO} \longrightarrow \mathrm{CO}_{2}+\mathrm{CO} \) B) ¿Cuánto Oxido Ferroso se necesita para producir 180 kg de Hierro? b) ¿Cuánto Carbono se habrá consumido si al final del proceso se generaron 400 kg de Dióxido de Carbono?

All the following aims to get iron ore used in red pigments except: (Exam \( 1 \mathrm{L2} \mathbf{~ C h} 2 \) ) a) Thermal decomposition of iron salt produced from reacting diluted \( \mathrm{H}_{2} \mathrm{SO}_{4} \) with black iron oxide b) Heating of yellowish grey ore strongly in air c) heating Iron II hydroxide above \( 200^{\circ} \mathrm{C} \) d) Oxidation of black iron oxide

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

The common property in the 2 elements forming the compounds that are used in cosmetics are that both........... (Exam 1 L2 Ch2) a) are transition elements b) have same electronic configuration in this compound c) have same magnetic moment d) have same oxidation state in this compound

An iron ore ( X ), 2 elements ( \( Y \) and Z ) from this ore are used in making 2 types of alloys, if you know that element \( Y \) is a source of reducing agent in blast furnace, which of the following is true about element ( z ) and iron ore \( (\mathrm{X} \) ) respectively? (Exam \( 1 \mathrm{L2} \mathbf{C h} 2 \) ) a) \( Z \) has highest magnetic moment in oxidation state +2 , while \( X \) is paramagnetic b) \( Z \) has highest magnetic moment in oxidation state +3 , while \( X \) is thermally decomposed in air giving a black oxide c) \( Z \) is not considered as a transition element, while \( X \) is thermally decomposed in absence of air giving a black oxide d) \( Z \) forms paramagnetic compounds in most of it's oxidation states, while \( X \) requires roasting before reduction

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