Answer:
0 M.
Explanation:
Hello,
In this case, the undergoing reaction is:
![M(NO_3)_2+NaCN\leftrightarrow [M(CN)_4]^{-2}+NaNO_3](https://tex.z-dn.net/?f=M%28NO_3%29_2%2BNaCN%5Cleftrightarrow%20%5BM%28CN%29_4%5D%5E%7B-2%7D%2BNaNO_3)
Nonetheless, it only matters the reaction forming the given complex:
![M^{+2}+4CN^-\leftrightarrow [M(CN)_4]^{-2}](https://tex.z-dn.net/?f=M%5E%7B%2B2%7D%2B4CN%5E-%5Cleftrightarrow%20%5BM%28CN%29_4%5D%5E%7B-2%7D)
In such a way, the formation constant turns out:
![K_F=\frac{[[M(CN)_4]^{-2}]_{eq}}{[M^{+2}]_{eq}[CN^{-}]_{eq}^4}](https://tex.z-dn.net/?f=K_F%3D%5Cfrac%7B%5B%5BM%28CN%29_4%5D%5E%7B-2%7D%5D_%7Beq%7D%7D%7B%5BM%5E%7B%2B2%7D%5D_%7Beq%7D%5BCN%5E%7B-%7D%5D_%7Beq%7D%5E4%7D)
Now, one could assume that the initial concentrations of the ions equals the original compounds concentrations:
![[M^{+2}]_0=0.150M;[CN^-]_0=0.820M](https://tex.z-dn.net/?f=%5BM%5E%7B%2B2%7D%5D_0%3D0.150M%3B%5BCN%5E-%5D_0%3D0.820M)
In such a way, we modify the formation constant in terms of the change 
due to the reaction progress:
Now, solving for :
The feasible solution is 0.15M which will lead to an equilibrium concentration of M⁺² of 0M
![[M^{+2}]_{eq}=0.15M-0.15M=0M](https://tex.z-dn.net/?f=%5BM%5E%7B%2B2%7D%5D_%7Beq%7D%3D0.15M-0.15M%3D0M)
This fact has sense since the formation constant is very large.
Best regards.
D, I think.
Because the bedroom is closer to the windows where is cold and wind went through, while the kitchen is a hot spots.
Answer:
1 Hour...
Explanation:
If It’s 960 Km/h, then it will take 1 hour to fly there.
Answer : The pressure after the temperature change is, 0.752 atm
Explanation :
Gay-Lussac's Law : It is defined as the pressure of the gas is directly proportional to the temperature of the gas at constant volume and number of moles.
or,
where,
= initial pressure = 0.82 atm
= final pressure = ?
= initial temperature = 
= final temperature = 
Now put all the given values in the above equation, we get:
Thus, the pressure after the temperature change is, 0.752 atm
