Respuesta :
Answer:
See explanation below
Explanation:
In order to do this, we first need to know the molecular mass of the Copper(II) chloride to get the moles.
The Copper(II) chloride formula is CuCl₂, and the atomic mass of each element is:
Cu = 63.55 g/mol; Cl = 35.45 g/mol
The molecular mass will be:
MM = 63.55 + (35.45*2) = 134.45 g/mol
let's see how many moles we have in the 7.90 M solution. This is, to know how many grams we have in that solution and stablish a relation between this mass and the desired mass:
moles = 7.90 * 0.133 = 1.0507 moles
mass = 1.0507 * 134.45 = 141.27 g
This means that we have 141.27 g of copper chloride initially, and we need to get 4.49 g of the solution. When a solution is dilluted, means that the solute remains constant and the amount of solvent is increased. Therefore we just need to figure out the volume of the initial solution that can contain the desired mass. This is done by this:
If 133 mL contains 141.27 g, then with 4.49 g in how much volume is contained?
V = 4.49 * 133/141.27 = 4.23 mL
This means that if we take 4.23 mL of the initial solution and dillute it to 51.5 mL, this solution will contain the 4.49 g of copper chloride.
When This indicates that if we take 4.23 mL of the initial solution and also dilute it to 51.5 mL, this solution will include 4.49 g of copper chloride.
What is Chloride Solution?
To do this, we rather need to comprehend the molecular mass of the Copper(II) chloride to get the moles.
The Copper(II) chloride formula is CuCl₂, and also the atomic mass of each element is:
Then, Cu is = 63.55 g/mol; Cl = 35.45 g/mol
The molecular mass will be:
MM is = 63.55 + (35.45*2) = 134.45 g/mol
let's see That, is how many moles we have in the 7.90 M solution. This is, to know how many grams we have in that solution and also establish a relation between this mass and the desired mass:
Then, moles = 7.90 * 0.133 = 1.0507 moles
After that, mass = 1.0507 * 134.45 = 141.27 g
This indicates that we have 141.27 g of copper chloride initially, and we need to get 4.49 g of the solution. When a solution is diluted, indicates that the solute remains constant and the amount of solvent is increased. Thus we just need to figure out the volume of the initial solution Then we can prevent the desired mass. This is done by this:
If 133 mL contains is 141.27 g, then with 4.49 g in how much volume is they contained?
Therefore, V is = 4.49 * 133/141.27 = 4.23 mL
When This indicates that if we take 4.23 mL of the initial solution and also dilute it to 51.5 mL, this solution will include 4.49 g of copper chloride.
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