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irakobra [83]
3 years ago
7

The setup in the diagram is left outside during the day and night . Bubbles are continuously produced regardless of the presence

of sunlight.what can you predict of the composition in the bubbles
A. The bubbles are always O2
B. The bubbles are always carbon dioxide CO2
C. During the day the bubbles are CO2 and in the night O2
D. During the day they are O2 and in the night CO2
Chemistry
1 answer:
Angelina_Jolie [31]3 years ago
6 0

Answer:

A

Explanation:

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<h3>Explanation</h3>

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The lithium atom used to have no oxygen atoms when it was on the reactant side. It gains two oxygen atoms after the reaction. It has gained more oxygen atoms than the manganese atom. Gaining oxygen is oxidation. As a result, lithium is being oxidized.

Oxidation takes place at the anode of a cell. Therefore, the anode of this cell is made of lithium.

Lithium has an atomic mass of 6.94. Each gram of Li would contain 1/6.94 = 0.144 moles of Li atoms. Each Li atom loses one electron in this cell. Therefore, the number of electron transferred, <em>n</em>, equals 0.144 moles for each gram of the anode.

Let w_\text{max} represents the electrical energy produced.

w_\text{max} = n \cdot F \cdot E_\text{cell}, where

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<em>n </em>= 0.144 mol, as shown above, and

<em>F </em>= 96.486 kJ / (\text{V} \cdot \text{mol} \; \text{e}^{-}).

Therefore,

w_\text{max} = n \cdot F \cdot E\\\phantom{w_\text{max}} = 0.144 \times 96.486 \times 3.15 \\\phantom{w_\text{max}} = 43.8 \; \text{kJ}.

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