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Kaylis [27]
2 years ago
8

Turns red lithmus paper blue

Physics
1 answer:
elena55 [62]2 years ago
5 0

<em>In BASE liquids</em> ... pH greater than 7 ... red litmus paper turns blue, and blue litmus paper stays blue.

In ACID liquids ... pH less than 7 ... blue litmus paper turns red, and red litmus paper stays red.

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Answer:

B. QC > 0; QH < 0

Explanation:

Given that there are two reservoir of energy.

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1.If the heat is adding to the system then it is taken as positive and if heat is going out from the system then it is taken as negative.

2. If the work is done on the system then it is taken as negative and if the work is done by the system then it is taken as positive.

From hot reservoir heat is going out that is why it is taken as negative

Q_H

From cold reservoir heat is coming inside the reservoir that is why it is taken as positive

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That is why the answer will be

Q_H ,Q_C>0

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