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

what is 6 times 7.49 hundredths

Please answer the following question in English. List at least two reasons why you think it is beneficial to learn Spanish. When entering your answers for fill

A plant grows 16 inches every 4 months. How much will it grow in a year? 96 inches 32 inches 64 inches 48 inches

Help Please! What was Phillis Wheatley's occasion, genre, and audience?

Benjamin paints and sells his art work at art shows. He charges $56.25 for a large painting. He charges $25.80 for a small painting. Last month he sold six larg

A limerick has four lines. True False

You should always end your presentation by giving your contact information. Here are the choices True False

Which best states a theme of "The Lottery"? a. Lotteries are needed to ensure a good harvest. b. Traditions help people remain civilized. c. People are frien

132,554 round to nearest tenth

my number has 2 hundreds the tens digit is 9 more than the ones digit