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Elden [556K]
3 years ago
13

Are the chemical reactions that take place when a battery connected endothermic or exothermic

Chemistry
1 answer:
Vilka [71]3 years ago
8 0

Answer:

The answer is endothermic as the heat flows into the system from the surroundings. The products are at higher energy than the reactants, as they have absorbed energy.

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Determine the percentage of carbon and hydrogen in ethane C2H6 if the molecular weight is 30.
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Answer:

Percentage of carbon:

{ \tt{ =  \frac{24}{30}  \times 100\%}} \\  = 80\%

Percentage of hydrogen:

{ \tt{ =  \frac{6}{30}  \times 100\%} } \\  = 20\%

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Explanation:

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Which state removed a physician's license to practice medicine.
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