Calculate Mass Percent: HNO3 in Sample

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To calculate the mass percent of HNO3 in the sample, first determine the moles of NaOH and AgNO3 used in the titrations. The moles of NaOH can be calculated using its molarity and volume, while the moles of AgNO3 can be derived similarly. Next, establish the stoichiometry of the reactions involving HCl and HNO3 to find the total moles of acid present. Finally, use the moles of HNO3 and its molar mass to calculate the mass percent of HNO3 in the sample. This process involves careful stoichiometric calculations based on the titration data provided.
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Homework Statement


A sample conaining both HCl and HNO3 had a density of 1.083g/ml. A 43.00 ml amount of this sample required 29.09 ml of 0.2828 M NaOH for titration. Another 43.00 ml amount of this sample required 7.88 ml of 0.1505 M AgNO3 for titration. Calculate the mass percent of HNO3 (molar mass = 63.018 g/mol) in the sample.


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The Attempt at a Solution


I know that you have to calculate the total number of mols of acid, but I'm not where to even start to do that.
 
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Start with writing all reaction equations. Three of them.
 
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