christlife1159 christlife1159

07-09-2017
Chemistry

contestada

An aqueous solution is 0.387 m in hcl. what is the molality of the solution if the density is 1.23 g/ml?

Respuesta :

19-09-2017

Assume you have 1.00 L (1000 mL) of solution. d = m / V m = d x V = 1.23 g/mL x 1000 mL = 1230 g of solution 0.387 mol/L x 1 L = 0.387 mol HCl 0.387 mol HCl x (36.5 g / 1 mol) = 14.1 g HCl mass of water = 1230 g solution - 14.1 g HCl = 1216 g H2O = 1.216 kg H2O molality = mol HCl / kg water = 0.387 mol / 1.216 kg = 0.318 mol/kg (or 0.318 molal)

Answer Link

Otras preguntas

Which of the following answers refer to the characteristic features of cable modems? (Select 3 answers)A. Cabling that carries TV signalsB. Telephone linesC. Co

Why is sucrose not a reducing sugar?2)ecause it is a disaccharide 2) Because it does not have a free carbonyl group 3) Because it is not soluble in water 4) Bec

what two scientists won the nobel prize in medicine in 1906 for their contributions to the understanding of the structure of nerves and the nervous system?

Which of the following accurately lists the Six Dynasties from earliest to latest? 1) Han, Tang, Song, Yuan, Ming, Qing 2) Tang, Han, Song, Yuan, Ming, Qing 3)

how many molecules of each of the cofactors are produced when these two acetyl-scoa molecules pass through the citric acid cycle?1. NaDH: 2. molecules FaDH₂: 3.

Find the roots of the equation when (0.1 < x < 1.4). A) x = 0.5 B) x = 0.8 C) x = 1.1 D) x = 1.3

In a class of 32 students, 17 study Music and 20 study Art. What is the LEAST number of students who are studying BOTH Music and Art? (A) (B) (C) 12 (D) 15 3 SV

did factories make tenement buildings for their employess to live in during the industrial revolution

multiply out -(x + 5)

Who created a set of rules for monks that was widely adopted by other monasteries across Europe? 1) St. Benedict 2) St. Francis 3) St. Augustine 4) St. Patrick