DaNasiaPreston DaNasiaPreston

02-05-2022
Chemistry

contestada

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%

Respuesta :

jsimpson11000 jsimpson11000

02-05-2022

Answer:

D 86.8%

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 %

Answer Link

Otras preguntas

Some military fighter planes are capable of flying at a rate of 950 mph. One of these planes flew 6138 mi with the wind in the same amount of time it took to fl

Please explain I’d really appreciate it:)

How is Pluto different from outer planets

2. Why do Historians have a hard time understanding what Pre-Columbian America was like?

Rearrange so that u is the subject: s = (u+v)t/2 A. u = s/t + v B. u = 2s/t - v C. u = 2s - t/v D. u = 2s - v/t

what does kalagayan ng lugar means.....can you explain what does (kalagayan ng lugar) means I'm not good at Filipino subject hehewalang filipino akong nahahanap

unshuffle these letters *its two words that mean an alternate name for the skin): BACAUNOSMUTENEERM

Principal: $17,600 Interest rate: 12% Compounded quarterly Calculate the effective rate (APY) of interest for 1 year.

Matrics AssismentQ.4) If A = [1 5 ; 4 6] and B = [8 2 ; 0 4] then find BA.

can someone helppp plsss!!!!!! 6. What were the two main lifestyles in Arabia? * a. sedentary and nomadic b. urban and suburban c. industrial and non-industri