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VashaNatasha [74]
3 years ago
6

What must be done to the following half-reactions before they can be added together?Mn (s) → Mn 2+ (aq) + 2e − Fe 3+ (aq) + 3e −

→ Fe (s)Double the Mn half-reaction and triple the Fe half-reaction.Add H+ ions to the left-side of the Mn reaction.Triple the Mn half-reaction and double the Fe half-reaction.Double the Mn half-reaction.none of the above
Chemistry
1 answer:
Mrrafil [7]3 years ago
4 0

Answer:

Triple the Mn half reaction and double the Fe half reaction

Explanation:

Because...we have to balance the number of electrons(e)...which will be eliminated from the equations and they will be combined

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Which of these statements best explains why the soil around a volcanic region is fertile?
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The correct statement is option c, that is, particles discharged in the air by volcanoes fall to the ground and enrich the soil.  

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The eruptions of volcanoes lead to the dispersion of ash over the broader regions surrounding the site of eruption. On the basis of the chemistry of the magma, the ash will be comprising different concentrations of soil nutrients. While the major elements found in the magma are oxygen and silica, the eruptions also lead to the discharging of carbon dioxide, water, hydrogen sulfide, sulfur dioxide, and hydrogen chloride.  

In supplementation, the eruptions also discharge bits of rocks like pyroxene, potolivine, amphibole, feldspar that are in turn enriched with magnesium, iron, and potassium. As an outcome, the areas which comprise huge deposits of the volcanic soil are quite fertile.  

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b

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The Lineweaver–Burk plot, which illustrates the reciprocal of the reaction rate ( 1 / v ) versus the reciprocal of the substrate
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