The cornea does not contain any blood vessels, but instead contains many nerve endings that make it extremely sensitive. That is why a scratch or a loose eyelash is so painful.
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Answer:
Explanation:
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In this case, since calcium hydroxide a strong base, its dissociation will completely result in both calcium and hydroxyl ions:
Thus, the concentration of hydroxyl ions equals that of the calcium hydroxide, with which we could compute the pOH as shown below:
Now, the pH and the pOH are related by:
Hence, the pH finally results:
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