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Alecsey [184]
3 years ago
10

After soaking for one hour in a solution of unknown concentration, a slice of potato appears have lost weight. You can determine

that the solution is
Chemistry
1 answer:
ale4655 [162]3 years ago
3 0
Hypertonic

Hope this helps (:
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During an experiment, Mr. Lehman tells his students to be alert for signs that an endothermic reaction is happening. Which of th
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A test tube becomes cool to the touch.

Explanation:

The signs for an endothermic reaction would most likely be that a test tube becomes cool to touch. An endothermic reaction is a reaction in which heat is absorbed from the environment.

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How will you describe the pathway of oxygen in the breathing system?
QveST [7]
<span>Air enters through the nose or mouth (which join to form the nasopharyngeal cavity). The air travels through the trachea which and the trachea splits into two bronchi. The air travels through the bronchi which split into smaller and smaller bronchioles. The tiny bronchioles and the air ends up in the miniscule alveoli, where the oxygen in the air diffuse into the bloodstream. Carbon dioxide diffuse from the bloodstream into the alveoli and the unwanted gas travels in reverse back to the nose and mouth, where it is breathed out.</span>
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Fill in the blanks with the correct words to complete the sentence.
navik [9.2K]

Answer:

Explanation:

Salt water intrusion can cause the <u><em>fresh</em></u> water in wells to become contaminated with<u><em> salt</em></u>water.

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