Question 9 In 1928, 2.0 g of rhenium, Re, was isolated from 550 kg of the ore molybenite. The percent by mass of this element in the molybenite was O 0.36%. O 0.0036 %. O 3.6 x 10-2%. ○ 3.6 %. O 3.6 x 10 %.

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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CH3CHU+30₂ → 2CO₂ + 2H₂O
O NH4NO3 → 2H₂O + N₂
O 2Na2SO4 + 3Bi(NO3)3 → Bi2(SO4)3 +9NaNO3
Sn + 4HNO3 → SnO₂ + 4NO2 + 2H₂O
O Na₂CO3 + 2H₂SO4 → Na2SO4 + 2H₂O + CO₂
Question 9
In 1928, 2.0 g of rhenium, Re, was isolated from 550 kg of the ore molybenite. The percent by mass of this element in the molybenite was
O 0.36%.
O 0.0036 %.
O 3.6 x 10-2%.
O 3.6 %.
O 3.6 x 10 %.
Question 10
Transcribed Image Text:● D Canvas CH3CHU+30₂ → 2CO₂ + 2H₂O O NH4NO3 → 2H₂O + N₂ O 2Na2SO4 + 3Bi(NO3)3 → Bi2(SO4)3 +9NaNO3 Sn + 4HNO3 → SnO₂ + 4NO2 + 2H₂O O Na₂CO3 + 2H₂SO4 → Na2SO4 + 2H₂O + CO₂ Question 9 In 1928, 2.0 g of rhenium, Re, was isolated from 550 kg of the ore molybenite. The percent by mass of this element in the molybenite was O 0.36%. O 0.0036 %. O 3.6 x 10-2%. O 3.6 %. O 3.6 x 10 %. Question 10
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