2. You made a pH=9.8 buffer solution by mixing NaOH and glycine to give a solution that is 0.20 M in total concentration of glycine. (pkal-2.34 and pka2=9.69) a) What 2 glycine species are present in the buffer solution at this pH? (draw their structures) b) What is the concentration ratio of these 2 species? c) How many moles of each species, A and HA, is there in 500 ml of the buffer solution. d) If 25 ml of 0.82 M HCl is added to 500 ml of this buffer solution. What reaction is taking place? What is the final pH of the solution? Is the solution still a buffer? e) Draw the titration curve, pH versus equivalents of OH-, for glycine and determine the pl.

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Please help me understand and answer the following.

Please complete the following question. 4

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In DNA, complementary base pairing dictates that adenine always and only pairs with _______________________ and ______________________ always and only pairs with _______________________________.

Keratin and fibrinogen are examples of _____________ proteins.

A student performed Benedict's reagent test on an monosaccharide. As she added Benedict's reagent to the sample, the reagent color changed from blue to brick red.    Question 7 options:   This test indicated that the monosaccharide does contain a chiral carbon.   This test indicated that the monosaccharide sample is not a reducing sugar.   This test indicated that the monosaccharide does not contain a chiral carbon.   This test indicated that the monosaccharide sample is a reducing sugar.

Health Science Question: Answer in 15 minutes not more than that ASAP-  Answer correctly and read the question correctly, I do not need an explanation to why these are the correct answer, I just would like the key answer please and thank you. If the question is done correctly, I will write a very wonderful and long review about you!