21) What is the percent by mass of bromine in the compound MgBr₂? A) 13.2% B) 43.4% C) 56.6% D) 86.8%

Jjankowiak asked Sep 17, 2023

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21) What is the percent by mass of bromine in the compound MgBr₂?

A) 13.2%
B) 43.4%
C) 56.6%
D) 86.8%

Jjankowiak asked Sep 17, 2023

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10 votes

Answer:

D 86.8%

Step-by-step explanation:

Two bromines mole wt = 2 * 79.9 = 159.8 gm (from periodic table)

Mg = 24.3 gm

159.8 / ( 159.8 + 24.3) = .868 = 86.8 %

Omu answered Sep 22, 2023

by Omu

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