ANSWERS: 1
  • Required for what? pH of 7? Maybe that needs to be clearer. Anyway, this one is easy, because 44.15 mL of 0.9035 N NaOH is almost exactly 1 mole. 1 mole of base reacts with one mole of acid via the equation HCl + NaOH -> NaCl + H2O. One mole of HCl is 36.5 grams, since you started with 4.0520 g of some dilution of HCl, though, this makes no sense at all. Something is wrong or the context is unclear.

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