In 1928,1.0 g of rhenium,Re,was isolated from 660 kg of the ore molybenite.The percent by mass of this element in the molybenite was A)0.66 %. B)0.15 %. C)3.5 × 10^-4 %. D)6.6 × 10^-3 %. E)1.5 × 10^-4 %.

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The Answer of In 1928,1.0 g of rhenium,Re,was isolated from 660 kg of the ore molybenite.The percent by mass of this element in the molybenite was A)0.66 %. B)0.15 %. C)3.5 × 10^-4 %. D)6.6 × 10^-3 %. E)1.5 × 10^-4 %.

In 1928,10 G of Rhenium,Re,was Isolated from 660 Kg of the the Ore