ttyllthyx8456 ttyllthyx8456

01-08-2017
Chemistry

contestada

20 g of nh4cl is added to 13.9 g of water. calculate the molality of the solution.

Respuesta :

Willchemistry Willchemistry

02-08-2017

Molar mass NH4Cl = 53.491 g/mol

number of moles solute :

n = m / mm

n = 20 / 53.491

n = 0.373 moles

solvent in kg :

13.9 / 1000 => 0.0139 kg

Therefore:

m = moles / volume

m = 0.373/ 0.0139

=> 26.83 molal

Answer Link

Otras preguntas

Which of these is a controllable risk factor for disease? A. Nutrition B. Climate C. Age D. Poverty

21/7+3/7(3x−5)=−4 Drag and drop the statement that shows the solution to the equation into the box.

Note cards should be coded or numbered based on

Forest works at the middletown cafe. this week he served a table a meal costing $53.69 and received a 15% tip. how much was he tipped?

Which feature is found most often in prokaryotic cells? A) plasmid B) flagella C) cytoplasm D) cell membrane

what is y intercept and x intercept of f (x)=(x+3)^2

do laws and regulations always restrict or impede the efforts of business professionals, or can they actually help businesses? In addition to this, could you l

when the u.s census is completed each state is notified how it population affects its number of congressional districts this process is called

Refer to wal-mart. the addition of the corporate compliance department reflects the implementation of a(n) ____.

What is the multiple zero and multiplicity of f(x)=(x+8)(x+8)(x-3)(x+8)