Suppose that Biuret reagent turns purple when it is added to an unknown substance. What can you conclude about the substance?
A. The substance is an acid.
B. The substance contains protein.
C. The substance contains starch.
D. None of the above are valid conclusions.
Answers: 2
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Suppose that Biuret reagent turns purple when it is added to an unknown substance. What can you conc...
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