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

Read the sentence. A new law must be passed before tomorrow. Which are the auxiliary verbs in the sentence’s underlined verb phrase? must, passed must,

Quick anyone know this geometry answer?

Rehan has been awarded some money in a settlement. He has the option to take a lump sum payment of $170,000 or get paid an annuity of $1,000 per month for the n

Which of the following sets of possible side lengths forms a right triangle? 12, 35, and 38 11, 60, and 61 9, 40, and 45 6, 12, and 13

.48 divided by 9.23 rounded by nearest tenth

Is there more potentioal energy at the top of bottom of a ramp?

Definition: these are physical features shared by organisms with common ancestry; they may have the same structure, but different functions developmentally matu

If a student would like to be part of the class play

Find the possible values of the included angle of a triangle with: A) sides of length 5 cm and 8 cm, and area of 15 cm^2 B) sides of length 45 km and 53 km, and

Which sign makes the statement true 16/25 or 64%