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Orange juice is an aqueous solution that derives much of it's acidity from citric acid. There are variations in the acidity of each brand depending on many factors. Use the data below from an acid-base titration with standard NaOH (sodium hydroxide) to determine the mass% and molarity of citric acid in the juice sample.
citric acid H3C6H5O7
volume of juice: 2.7mL
Molarity of NaOH: .0115
Buret initial: 2.5mL
Buret final: 34.3mL
density of juice: 1.0g/mL
An aqueous solution contains 4.90% NH3 (ammonia) by mass. The density of the aqueous ammonia is 0.979 g/mL. What is the molarity of NH3 in the solution?
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suggest a procedure you could follow to determine whether it was necessary to use this solution as a reference or whether distilled water would have been just as satifactory
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170 mL of an HCl solution with pH of 2.60 is added to 200 mL of an HNO3 solution. The resulting pH is 1.40. What was the pH of the original HNO3 solution?
Which of these given nutrients is likely to limit production if the light supply is adequate and there is no nitrogen fixation?
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