sorry but if you are looking for an answer I don't know one. :(
Answer: 
Explanation:

Multiply by t on both sides.


Now divide by I to isolate t.


POH of a 0.0072 M=-lg(0.0072) = 2.1426675
A physical property is what a substance is like; it's directly observable. On the other hand, a chemical property is how a substance behaves; its reactivity.
Examples of a physical property are: color, texture, boiling point, freezing point, and melting point.
Examples of a chemical property are: flammability, combustion, and formation of a precipitate.
The formula will be AI2O3