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

A novel of manners deals with _____. character customs plot

Select one of the entries . did this event make china stronger or weaker

The number factor of a variable term is called the

Which scientific term is defined as the rate at which work is accomplished? a. potential b. mechanics c. power d. energy

A cube has a volume of 1,000 cubic units. What is the length of one side

Danica has laid so they form a rectangle with a perimeter of 18 inches.What is the difference between the greatest and least possible areas of the rectangle?

In what way did the United Kingdom, France, and the Soviet Union deal with Germany similarly in the years before World War II? A. They tried to avoid war with G

wich is bigger 7/8 or 8/9

Spiritual health is __________ because people have many different ways of connecting spiritually. a. easy to understand b. simple c. subjective d. objective

3. 4 teammates share 5 granola bars equally. Draw to show how much each person gets. Shade the amount that one person gets. Write the answer.