Answer: 94.07%
Explanation:
Percentage yield can be calculated by the formula
%yield = Experimental yield/Theoretical yield x100
Experimental yield = 7.93g
Theoretical yield = 8.43
%yield = Experimental yield/Theoretical yield x100
%yield = 7.93/8.43 x 100 = 94.07%
Answer:
I don't remember how to label it, but it is 20.
Explanation:
The answer is 20 because once you dat the rock in the water, that is how much it changed.
Complete question is;
A common way to describe the bonding energy curve for secondary bonding is the "6-12" potential. which states the bonding energy, E = - A/r^(6) + B/r^(12).
Write the expression that best represents the equilibrium bond length.
Answer:
Equilibrium bond length is;
r = (2B/A)^(1/6)
Explanation:
We are given bonding energy as;
E = - A/r^(6) + B/r^(12)
Now let's find the derivative of this bonding energy with respect to r and equate to zero to find the bonding length(r).
Thus;
dE/dr = 6A/r^(7) - 12B/r^(13)
Equating to zero gives;
6A/r^(7) - 12B/r^(13) = 0
6A/r^(7) = 12B/r^(13)
Divide both sides by 6 to give;
A/r^(7) = 2B/r^(13)
2B/A = (r^(13))/(r^(7))
2B/A = r^(13 - 7)
2B/A = r^(6)
Thus, r = (2B/A)^(1/6)
Answer:
Low value for copper recovery
Explanation:
The percentage recovery is obtained from;
Percent recovery = amount of substance you actually collected / amount of substance you were supposed to collect × 100
Note that the fact that some of the copper nitrate solution splashed out of the beaker means that some amount copper has been lost from the system. This loss of copper leads to a lower value of copper recovered from solution.