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Material Type: Exam; Class: QUANTITATIVE ANALYSIS; Subject: Chemistry; University: University of Alabama - Huntsville; Term: Unknown 1989;
Typology: Exams
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Protein (μg): 0.00 9.36 18.72 28.08 37. Absorbance at 595 nm: 0.466 0.676 0.883 1.086 1.
a. Determine the equation of the least-squares straight line through these points in the form y = [m(±sm )]x + [b(±s (^) b)] (15 points)
b. An unknown protein sample gave an absorbance of 0.973. Calculate the number of micrograms of protein in the unknown and estimate its uncertainty. (5 points)
Na 2 CO 3 (aq) + 2 HCl(aq) → 2NaCl (aq) + H 2 O(l) + CO 2 (g) NaHCO 3 + HCl → NaCl(aq) + H 2 O(l) + CO 2 (g)
Find the mass of each component of the mixture. (5 points)
