<span>It is a chemical change. When milk turns sour for example in a warm room it is a chemical change. If it was a physical change you would be able to undo the souring of milk. Since you can't, it is not a physical change.</span>
~Deceptiøn
The question is incomplete, here is the complete question.
A chemist prepares a solution of copper(II) fluoride by measuring out 0.0498 g of copper(II) fluoride into a 100.0mL volumetric flask and filling the flask to the mark with water.
Calculate the concentration in mol/L of the chemist's copper(II) fluoride solution. Round your answer to 3 significant digits.
<u>Answer:</u> The concentration of copper fluoride in the solution is ![4.90\times 10^{-3}mol/L](https://tex.z-dn.net/?f=4.90%5Ctimes%2010%5E%7B-3%7Dmol%2FL)
<u>Explanation:</u>
To calculate the molarity of solute, we use the equation:
![\text{Molarity of the solution}=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}](https://tex.z-dn.net/?f=%5Ctext%7BMolarity%20of%20the%20solution%7D%3D%5Cfrac%7B%5Ctext%7BMass%20of%20solute%7D%5Ctimes%201000%7D%7B%5Ctext%7BMolar%20mass%20of%20solute%7D%5Ctimes%20%5Ctext%7BVolume%20of%20solution%20%28in%20mL%29%7D%7D)
We are given:
Given mass of copper (II) fluoride = 0.0498 g
Molar mass of copper (II) fluoride = 101.54 g/mol
Volume of solution = 100.0 mL
Putting values in above equation, we get:
![\text{Molarity of copper (II) fluoride)=\frac{0.0498\times 1000}{101.54\times 100.0}\\\\\text{Molarity of copper (II) fluoride}=4.90\times 10^{-3}mol/L](https://tex.z-dn.net/?f=%5Ctext%7BMolarity%20of%20copper%20%28II%29%20fluoride%29%3D%5Cfrac%7B0.0498%5Ctimes%201000%7D%7B101.54%5Ctimes%20100.0%7D%5C%5C%5C%5C%5Ctext%7BMolarity%20of%20copper%20%28II%29%20fluoride%7D%3D4.90%5Ctimes%2010%5E%7B-3%7Dmol%2FL)
Hence, the concentration of copper fluoride in the solution is ![4.90\times 10^{-3}mol/L](https://tex.z-dn.net/?f=4.90%5Ctimes%2010%5E%7B-3%7Dmol%2FL)
Answer:
commensalism
(hope i spelled that right)
Explanation:
if the bird only nest in it and
the tree isn't really bothered or affected by the bird.
Answer:
Robert
Explanation:
There is not more than one colour