From the cyclic structure of allose given, whether it is i) a furanose or pyranose form ii) Î±- or Î²- anomer iii) D or L sugar are to be stated. Concept introduction: The pyranose form is a cyclic hemiacetal form with a six membered ring formed by the nucleophilic addition of the â€“OH group on C 5 to the C 1 carbonyl group. The furanose form is a cyclic hemiacetal form with a five membered ring formed by the nucleophilic addition of the â€“OH group on C 5 to the C 2 carbonyl group. The orientation of â€“OH group differs in Î±- and Î²- anomers. In Î±- anomer the OH on C 1 is cis to the â€“OH at the lowest chirality center in Fischer projection, while in Î²- anomer the â€“OH on C 1 is trans to the â€“OH at the lowest chirality center in Fischer projection. D sugars have the â€“O- at C 5 on the right in the uncoiled form while L sugars have -O- at C 5 on the left. To state: From the cyclic structure of allose given, whether it is i) a furanose or pyranose form ii) Î±- or Î²- anomer iii) D or L sugar.

Question

need help not sure what am doing wrong step by step please answer is 971A During the lecture, we calculated the Debye length at physiological salt concentrations and temperature, i.e. at an ionic strength of 150 mM (i.e. 0.150 mol/l) and a temperature of T=310 K. We predicted that electrostatic interactions are effectively screened beyond distances of 8.1 Å in solutions with a physiological salt concentration. What is the Debye length in a sample of distilled water with an ionic strength of 10.0 µM (i.e. 1.00 * 10-5 mol/l)? Assume room temperature, i.e. T= 298 K, and provide your answer as a numerical expression with 3 significant figures in Å (1 Å = 10-10 m).

Answer 1

Question

Chapter 25.SE, Problem 44AP

Interpretation Introduction

Interpretation:

From the cyclic structure of allose given, whether it is i) a furanose or pyranose form ii) Î±- or Î²- anomer iii) D or L sugar are to be stated.

Concept introduction:

The pyranose form is a cyclic hemiacetal form with a six membered ring formed by the nucleophilic addition of the â€“OH group on C₅ to the C₁ carbonyl group. The furanose form is a cyclic hemiacetal form with a five membered ring formed by the nucleophilic addition of the â€“OH group on C₅ to the C₂ carbonyl group.

The orientation of â€“OH group differs in Î±- and Î²- anomers. In Î±- anomer the OH on C₁ is cis to the â€“OH at the lowest chirality center in Fischer projection, while in Î²- anomer the â€“OH on C₁ is trans to the â€“OH at the lowest chirality center in Fischer projection.

D sugars have the â€“O- at C₅ on the right in the uncoiled form while L sugars have -O- at C₅ on the left.

To state:

From the cyclic structure of allose given, whether it is i) a furanose or pyranose form ii) Î±- or Î²- anomer iii) D or L sugar.

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