Technology is a wide spread human resource that many people use today, technology helps us cure fatal diseases or just the start of symptoms or getting sick. Technology has also helped us learn more about the world and what is
T was like before our time has come.
Answer:
Yes, that is correctly balanced. 2 H2 + 1 O2 = 2 H2O is already balanced.
Explanation:
If you count up the number of hydrogen atoms and oxygen atoms on each side, you will see that they are equal:
2 H2 + 1 O2 (4 hydrogen and 2 oxygen) = 2 H2O (4 hydrogen and 2 oxygen).
If the current can’t move the tree, the tree stop the current
Answer:
Check below
Explanation:
Ksp of AgCl = 1.8*10^-10
Ksp = [Ag+] [Cl-]
[Ag+] [Cl-] = 1.8*10^-10
Because [Ag+] = [Cl-] ,
[Ag+]² = 1.8*10^-10
[Ag+] = √((1.8*10^-10)_
[Ag+] = 1.35*10^-5M
That is [Ag+] in the original saturated solution.
NaCl is added to the saturated AgCl solution:
If Cl- = 0.72M , equation becomes
[Ag+] [ 0.72] = 1.8*10^-10
[Ag+] = (1.8*10^-10)/0.72
[Ag+] = 2.5*10^-10M
% Ag+ remaining in solution =(2.5*10^-10) / { (1.35*10^-5) * 100
% Ag+ remaining = 1.85*10^-3% or 0.00185%
Note that an approximation has been made here: [Cl-] is 0.72M + the unprecipitated Cl- from the AgCl. Because this latter is an infinitely small amount compared to 0.72M , it is quite safe to make this approximation without any effect on the answer.
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