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In 2008, China's tainted milk scandal spreaded around the world. This major issue is caused by the melamine-contaminated milk products. Shortly after, enzyme immunoassay (EIA) was developed to measure very small quantity of melamine level. What is an EIA? What is its detection limits (sensitivity range)? (please cite references is used any)
The molecular formula of glycine (an amino acid) is NH2CH2COOH, the molecular mass is 75.07grams/mole. If 10 glycines are joined together by a dehydration reaction to make a polypeptide, what would the molecular mass of the polypeptide equal.
biacetyl the flavoring that makes margarine taste just like butter is extremely stable at room temperature but at
Use the octet rule to predict the formula of the simplest compound formed from hydrogen and silicon.
Show whether or not precipitate will form in this process when the Ksp of Pbl = 9.8*10 -9
A solution of a weak acid was tested with the indicators used in this experiment the colors observed were violet orange red blue and yello what is the approximate pH of the solution
a 73.8 gram sample of caseo42h2o was heated thoroughly in a porcelain crucible until its weight remained constant.
At 25.0°C, a sample of Xe gas occupies 508 mL in a piston-cylider apparatus when the external pressure is 809 torr. At what pressure (torr) will its volume become 701 mL if the temperature does not change
In the following reactions identify the elements oxidized and elements reduced: • 3Ag + 4HNO3 .............> 3AgNO3 + NO +2H2O • 6Fe2+ + Cr2O72- + 14H+ .......>
The Km for the reaction of chymotrypsin with N-acetylvaline ethyl ester is 8.8 x 10-2 M, and the Km for the reaction of chymotrypsin with N-acetyltyrosine ethyl ester is 6.6 x 10-4 M.
Values for Ksp at O degrees C, 50 degrees C, and 100 degrees C are 1.14X10^-15, 5.47X10^-13, and 4.9X10^-14 respectively. Calculate the pH for a neutral solution at each of these temperatures.
What kinds of supplies/animals do you bring, and how long do you anticipate your voyage taking. Be specific and use specific examples of the kinds of winds, currents, gyres, and temperatures (and whatever else you will need to provide to justify y..
The standard electrode potential for the reduction of Eu3+(aq) to Eu2+(aq) is ?0.43 V. Use the data in Appendix D to determine which of the following is capable of reducing Eu3+(aq) to Eu2+(aq) under standard-state conditions
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