Answer:
bye have a neautiful time just kidding
Answer:
0.37 %
Explanation:
Given that:
Calculated density of aluminum = 2.69 g/cm³
Accepted density of aluminum = 2.70 g/cm³
![Error\ percentage=\frac {|Accepted\ value-Calculated\ value|}{Accepted\ value}\times 100](https://tex.z-dn.net/?f=Error%5C%20percentage%3D%5Cfrac%20%7B%7CAccepted%5C%20value-Calculated%5C%20value%7C%7D%7BAccepted%5C%20value%7D%5Ctimes%20100)
Thus, applying values as:
![Error\ percentage=\frac {|2.70-2.69|}{2.70}\times 100](https://tex.z-dn.net/?f=Error%5C%20percentage%3D%5Cfrac%20%7B%7C2.70-2.69%7C%7D%7B2.70%7D%5Ctimes%20100)
<u>Percent error = 0.37 %</u>
A solution with a higher concentration of hydroxide ions than hydrogen ions is basic solution.
This solution formed by Base dissolved in water and release hydroxide ions.
The PH of the solution is greater than 7
Base on your question where a concentration cell consist of two SN/SN2+half cells. The solution in one half cell A is 0.13M SN(NO3)2 and is 0.87 M Sn(NO3)2 in the other half cell to get the cell potential at 25 degree the answer is 0.059/2 log0.13/0.87
C) It determines the concentration of an unknown substance in neutralization reactions.