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Q. a 50g sample of Al(NO3)3 is dissolved in water to prepare 1500ml of solution. What is the concentration, in mol/L, of NO3 ions in the solution?

-The answer is 0.47 mol/L but I don't know how to solve it.

I am beginning to think you are answer mooching.

What is the concentration of the Al(NO3) in solution?

What is the concentration of the Nitrate ions?

I will be happy to critique your thinking.

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