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ruslelena [56]
2 years ago
10

You have 30mL of hot cocoa, but it’s way too sweet. You add hot water until there’s 70mL of hot cocoa and determine that the fin

al molarity is 2M, just the way you like it. What was the initial molarity of hot cocoa?
Chemistry
1 answer:
attashe74 [19]2 years ago
5 0
What is the answer to this question
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A topographical map of a section of Charleston, SC is shown. What feature is located at the dot marked with an X? A) the center
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It seems that you have missed the given image to answer this question. But anyway, I found it and got the answer. Based on the  topographical map of a section of Charleston, SC, the feature that is <span>located at the dot marked with an X is the high point of a hill. The answer would be option D.</span>
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What are the correct half reactions for the following reaction:
d1i1m1o1n [39]

Answer:

D. Zn → Zn²⁺ + 2e⁻, 2H⁺ + 2e⁻ → H₂.

Explanation:

  • It is a redox reaction that is consisted of two half-reactions:

Oxidation reaction:

Zn losses 2 electrons and is oxidized to Zn²⁺:

<em>Zn → Zn²⁺ + 2e⁻.</em>

<em></em>

Reduction reaction:

H⁺ gains 1 electron and is reduced to H:

<em>2H⁺ + 2e⁻ → H₂.</em>

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<em>So, the right choice is: D. Zn → Zn²⁺ + 2e⁻, 2H⁺ + 2e⁻ → H₂.</em>

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