An ion exchange resin prefers calcium over magnesium, indicated by Xcalcium = 0.6 and Ymagnesium = 0.3. The same resin prefers magnesium over sodium, indicated by Xmagnesium = 0.6, Ysodium= 0.2, What is the separation factor for the resin for calcium over sodium?
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- A mixture of dipeptides consisting of Lys-Gly, Thr-His, Ser-Leu, Glu-Gln was applied to column packed with cation-exchange resin at pH 6.0. Which of these dipeptides would be eluted from the column first? O Lys-Gly first O Thr-His first O Ser-Leu first O Glu-Gln first OA mixture of Thr-His and Ser-Leu firstWhat is the purpose of the pentane extraction of spinach juice? Why wouldn’t we want to spot an aqueous solution onto the silica gel?The standard curve to determine the amount of betacyanin is shown below. You extracted a red pigment from a beet disc (the mass of a disc is 2 g) using 10 ml of 20% ethanol solution. You measured absorbance of the solution above the beet disc every minute for a total time of 20 minutes. The increase in absorbance was linear during a period of time from 1 min to 10 min. The absorbance at 10 min was 0.8. Calculate the amount of betacyanin extracted from 1g of a beet tissue per minute. Explain your calculations. You can use Excel or a calculator.
- A plant isolate was subjected to qualitative tests to determine the presence of macromolecules. Below is a summary of results obtained: Biuret Ninhydrin Schiff's Test for Test for Deoxyribose Phosphat test test test Violet Violet Pink Blue Yellow solution solution solution solution precipitat To form a definitive conclusion about the isolate, what additional test is needed (if any)? O Wheeler-Johnson Test Sakaguchi Test Molisch Test Dische Diphenylamine Testa)Determine the amount of X (in gram) in order to prepare 100 mL of 50 mM stock solution of X. Show your work. (MW of X= 225) b)Determine the volume required (mL) from the stock solution X in (i) to prepare 500 mL of MS medium containing 5 mg/L X. Show your work.witj the following imformation create figures and explain the results
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