After 32 days, 5 milligrams of an 80-milligram sample of a radioactive isotope remains unchanged. what is the half-life of this element?
(1) 8 days (3) 16 days
(2) 2 days (4) 4 days

Describe in detail the melting point behavior of the 80: 20 benzoic acid-mandelic acid mixture

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.

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