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Vitek1552 [10]
3 years ago
10

EASY BUT I STILL NEED HELP

Chemistry
1 answer:
Dmitriy789 [7]3 years ago
4 0

Answer: 2

Explanation:

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List 3 substances that have atoms which are bonded.
noname [10]

Answer:

Carbon, Hydrogen, Oxygen, Nitrogen, and Sulfur.

(Those are all the ones I know)

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3 years ago
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Match the substance with its chemical formula.
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A galvanic cell at a temperature of is powered by the following redox reaction: 2Cr3 + 3Ca Suppose the cell is prepared with in
stira [4]

Answer:

2.13 V

Explanation:

The balanced equation of the reaction his;

2Cr^3+(aq) + 3Ca(s) -----> 2Cr(s) + 3Ca^2+(aq)

Since this is a galvanic cell then E°cell must be positive. It implies that calcium will be the anode and chromium will be the cathode since calcium is ahead of chromium in the electrochemical series.

E°anode= -2.87 V

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E°cell= E°cathode -E°anode

E°cell= -0.74 -(-2.87)

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3 years ago
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