HELP!!!! please A 0.160 M solution of an enanti 1-dm sample container. The molar

Question

HELP!!!! please

A 0.160 M solution of an enanti 1-dm sample container. The molar mass of the compound is 1330 gmol. y pure chiral D has an observed rotation of 0.25 in a (a) What is the specific rotation of D? What is the observed rotation if his solution is Q.160 M in L, the enk to edk deg mL g dm 21.05 deg (c) What is the observed rotation if the solution of D is diluted with an equal volume of solvent? (d) What is the specific rotation of D after the de de g s dm (f) What is the observed rotation of 100 mL ofa ) What is the specific rotation of L, the enantiomer of deg ml deg g- dm

Explanation / Answer

(a) What is the specific rotation of D?
[specific rotation = observed rotation / (c*l)].
0.160 M = mol/L
133 g/mol

0.160*133 =21.28 g/L* 1 L/ 1000 mL = 0.02128

So the equation would me +0.26/(0.02128)(1)...
...making the specific rotation 12.21 ----> {THIS is right only if the observed rotation is +0.26, the picture is blurred and I can not see it well, so i do not really sure about the observed rotation indicated in the problem}

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