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Answer 1 · 2015-06-28T18:01:33

B) $"NO"$ is the only compound in the list. It is slightly soluble in water.

The other substances are elements.

A) $"N"_2$

The solubility of $"N"_2$ in water at 20 °C and 1 bar is approximately 20 mg/L.

B) $"NO"$

The solubility of $"NO"$ in water at 20 °C is about 56 mg/L.

C) $"F"_2$

$"F"_2$ does not have a recorded solubility because it reacts explosively with water to form $"HF"$ , $"O"_2$ and $"O"_3$ .

$"2F"_2 + "2H"_2"O" → "O"_2+ "4HF"$
$"3F"_2+ "3H"_2"O" → "O"_3+ "6HF"$

D) $"Pb"$

Elementary lead does not dissolve in water.