14) At which temperature can water contain the most dissolved oxygen at a pressure of 1 atmosphere?
(A) 10.°C
(C) 30.°C
(B) 20.°C
(D) 40.°C

A. 10 C

Explanation:

In cold water, intermolecular forces between oxygen and hydrogen are stronger and greater. So solubility of oxygen is higher in water with lowest temperature.

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periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.