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

please help :(( find the perimeter of this figure 3dm, image attached

A truck with airbrakes going 55 mph would require a stopping distance of: a) more than 300 feet b) less than 100 feet c) 100 to 300 feet

What is a common denominator for 6/7 and 3/5

a cylindrical cup is 8 centimeters it holds 480 centimeters what is the radius

If you roll a 6-sided die 24 times, what is the best prediction possible for the number of times you will roll an even number?

What inference can be drawn in this excerpt from Jane Austen's Pride and Prejudice? Mr. Bennet's property consisted almost entirely in an estate of two thousan

Factorise 9y² -15yz +25x²

Given the sample space, S={1,2,5,6,9}. What is the total number of possible events?

Si le aplicas calor a un cubo de hielo que ¿ocurre con sus partículas?

Farzana and Jo are building a wall. Farzana uses 39 stones and Jo uses 45 stones.Then patch the dog knocks out of 10 stones. how many stones are left in the wal