Determine from experimental fact alone
Suppose you have a sample of a pure glyceraldehydes of the specific rotation [α] = -8.70. Can you determine from this experimental fact alone, and without consulting the literature, if this is (R) or (S)- glyceraldehydes?
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Calculate the percentages of 35Cl and 37Cl in naturally occurring chlorine when the average atomic mass of chlorine is 35.453 amu.
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