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

Write an equation in slope-intercept form that passes through (5, -8) and runs perpendicular to y = 5/2x + 4
What the solution 2(4+2x)≥5x+5
Which animal is more closely related to domestic dogs jackals or African wild dogs?
PLEASE HURRY WILL GIVE BRAINLIST ​
PLS SOLVE THIS VENN DIA GRAM using this file PLS HELP 50 POINTS
if you can help thank you so much
Evaluate help please!
What motivated the authors of the Articles of Confederation to create a government with a weak central authority? A) their concerns over the potential threat of
How many court and jury trials have you done and what is your win percentage? this question is for JustCayla so please dont answer <3
If 30 is the total number of starbursts in a bag, how many starbursts are 70% of the bag?