Respuesta :
Answer:- 3.68M.
Solution:- We have a 22.0% by mass solution of ethylene glycol and it's density is 1.04 gram per mL. It ask to calculate the molarity of the solution. We know that molarity is moles of solute per liter of solution. So, we need to figure out the moles of ethylene glycol and volume of solution.
Let's say we have 100 grams of the solution. Then mass of ethylene glycol would be 22.0 grams. Molar mass of ethylene glycol is 62.07 gram per mol.
Let's calculate it's moles first:
[tex]22.0gC_2H_6O_2(\frac{1mol}{62.07g})[/tex]
= [tex]0.354molC_2H_6O_2[/tex]
From mass and density we calculate the volume of the solution and convert it to liters as:
[tex]100g(\frac{1mL}{1.04g})(\frac{1L}{1000mL})[/tex]
= 0.0962 L
[tex]molarity=\frac{0.354mol}{0.0962L}[/tex]
= 3.68M
So, the molarity of ethylene glycol solution is 3.68M.
The study of chemicals is called chemistry. The mixture of two different components to form a single liquid is called a solution.
The correct answer to the question is 3.68.
What is Density?
- The density, of a substance is its mass per unit volume.
We have a 22.0% by mass solution of ethylene glycol and its density is 1.04 gram per mL. It asks to calculate the molarity of the solution.
We know that molarity is moles of solute per liter of solution. So, we need to figure out the moles of ethylene glycol and the volume of the solution. Let's say we have 100 grams of the solution. Then the mass of ethylene glycol would be 22.0 grams.
The molar mass of ethylene glycol is 62.07 grams per mol.
[tex]22.0C_2H_6O_2\frac{1}{62.07}[/tex]
[tex]0.354g[/tex]
From mass and density, we calculate the volume of the solution and convert it to liters as:
[tex]100\frac{1}{1.04}* \frac{1}{1000}[/tex]
=0.0962L
Hence, the molarity is:-
[tex]\frac{0.354}{0.0962}[/tex] =3.68
Hence, the correct answer is 3.68.
For more information about the moles, refer to the link:-
https://brainly.com/question/15209553
