Automobile catalytic converters use a platinum catalyst to reduce air pollution by changing emissions such as carbon monoxide, CO(g), into carbon dioxide, CO2(g). The uncatalyzed reaction is represented by the balanced equation below.2CO(g) O2(g) 2CO2(g) heatDetermine the number of moles of O2(g) required to completely react with 28 moles of CO(g) during this reaction.

14 moles O₂

Explanation:

The equation of the reaction is:

2CO(g)  +  O₂(g)  ⇄  2CO₂(g)    (1)

28 moles

Hence, from equation (1) we have that 2 moles reacts with 1 mol of O₂, so, the number of moles of O₂ required to completely react with 28 moles of CO is:

Therefore, the number of moles of O₂ is 14 moles.  

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sodium (na), for example, has one electron in its valence shell. this is an unstable state because that valence shell needs eight electrons to be full. in order to fill its valence shell, find a way to add seven electrons to its valence shell

pure substance: iron,copper

impure substance: water,charcoal