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Author Question: The molar mass of an insecticide, dibromoethane, is 187.9 g/mol. Its molecular formula is C2H4Br2. ... (Read 87 times)

tatyanajohnson

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on: Mar 21, 2021

Question 1

The mineral mimetite has the formula Pb5(AsO4)3Cl. What mass percent of oxygen does it contain?

◦ 38.70 %
◦ 16.34 %
◦ 50.32 %
◦ 12.90 %
◦ 1.08 %

Question 2

The molar mass of an insecticide, dibromoethane, is 187.9 g/mol. Its molecular formula is C2H4Br2. What percent by mass of carbon does dibromoethane contain?

◦ 0.536%
◦ 85.05%
◦ 12.78%
◦ 2.14%
◦ 6.39%
Chemistry: An Atoms First Approach ¦ Zumdahl, DeCoste ¦ 3rd Edition
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Marked as best answer by tatyanajohnson on Mar 21, 2021

hramirez205

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Reply #1 on: Mar 21, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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tatyanajohnson

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Reply 2 on: Mar 21, 2021
YES! Correct, THANKS for helping me on my review

yeungji

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Reply 3 on: Yesterday
Excellent

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