If the humidity of the room is low, the water that contacts the air directly could evaporate and takes some energy from the bulk thus decreasing its temperature steadily. This allows the water to have a lower temperature.
Explanation:
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It has to be dilute since the crystal dissolved and unsaturated for the same reason so B
1) If the hydrogen ion concentration of a solution is 10–10M, is the solution is definitely alkaline. The thing I used to determine that fact is basic point - <span>pH above 7 is always alkaine, and as a proof we can see from the task that </span><span>the concentration of hydroxyl OH- is pretty higher than hydrogen H+, which is a direct charachteristic of alkain solution.
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</span>>7 = basic
<span><7 = acidic </span>
7 = neutral
2) The most suitable answer for the second question is the negative logarithm of the hydrogen ion concentration. Pay attention to letters P and H, which pose as little promt as they point on Potential of Hydrogen. And the reason why it is negative is that scale of Ph is positive by default, but due to the fact that ion concentration is always less than 1, and as a result we get <span>the negative logarithm.
3) According to the small table shown in the first question, the answer is </span>[H+] = 1 x 10–11 M which is <span> pH 11, as I mentioned, since Ph is above 7 it is a basic solution.
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