Multiple Choice
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 %.
Correct Answer:
Verified
Correct Answer:
Verified
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