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Chemistry help

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I'm having trouble calculating the pH for the following solution :eek: :

 

10 mL of (0.10M NH3 + 0.10M NH4NO3) + 5 mL H2O + 1 mL 0.10M NaOH

 

Can you help me on how to set up the equations and determine concentrations? :)

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Ok my problem is fixed. for now at least, so don't worry about replying to this thread. thanks anyway!

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