11. A 10-mL graduate weighs 42.745 g. When 5 mL of distilled water is measuredin it, the combined weight of the graduate and water is 47.675 g. By definition,5 mL of water should weigh 5 g. Calculate the weight of the measured waterand express any deviation from 5 g as percentage of error.

By deducting the weight of the empty graduate from the weight of the graduate filled with water, it…

Answered: 11. A 10-mL graduate weighs 42.745 g.…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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pH 3.5 4.5 5.5 6.5 7.5 8.5 Absorbance 0.098 0.027 0.068 0.028 0.032 0.054 Concentration in diluted supernatant (mg/ml) 0.196 0.054 0.136 0.0056 0.0064 0.0108 Concentration in undiluted supernatant (mg/ml) 0.98 0.27 0.68 0.28 0.32 0.54 % solubility Formula for % solubility of proteins: % solubility = [(C x V x F) / (1000 x 35%)] x 100% C = concentration (mg/ml); F = dilution factor; V = volume of solution (ml) Calculate the % solubility of protein in the soy flour (Assume the soy flour contains 35% protein (w/w))
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1. Calculate the MAWQ for an electronic balance with a linearity of 0.001 g and an acceptable error of 5% or 0.05.
Time (min) 0 15 30 45 60 75 Solution A Weight (8) 4.205 4.032 3.787 3.648 3.550 3.500 Change (%) Solution B Weight (8) 3.611 -4.11% 3.606 -6.07% 3.622 -3.67% 3.662 -2.69% 3.706 1.41% 3.732 Change (%) Solution с Weight (8) 4.257 -0.138% 4.213 0.444% 4.219 4.209 Change (%) 4.210 -1.03% Solution D Weight (8) 4.728 4.513 0.142% 4.350 1.10% 0.237% 4.254 1.20% 0.024% 4.068 0.675% 4.209 -0.024% 4.140 Change (%) -4.55% -3.61% -2.21% -4.37% 1.77% Graph your results below, plotting percent weight change versus time for all 4 unknown solutions on one set of axes, labeled clearly with units. Include a title for your graph.

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11. A 10-mL graduate weighs 42.745 g. When 5 mL of distilled water is measured in it, the combined weight of the graduate and water is 47.675 g. By definition, 5 mL of water should weigh 5 g. Calculate the weight of the measured water and express any deviation from 5 g as percentage of error.