Answer: The hydroxide ion concentration in a solution is ![1\times 10^{10}M](https://tex.z-dn.net/?f=1%5Ctimes%2010%5E%7B10%7DM)
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration.
![pH=-\log [H^+]](https://tex.z-dn.net/?f=pH%3D-%5Clog%20%5BH%5E%2B%5D)
![HCl\rightarrow H^++Cl^{-}](https://tex.z-dn.net/?f=HCl%5Crightarrow%20H%5E%2B%2BCl%5E%7B-%7D)
According to stoichiometry,
1 mole of
gives = 1 mole of
Thus
moles of
gives =
moles of
![K_w=[H^+][OH^-]](https://tex.z-dn.net/?f=K_w%3D%5BH%5E%2B%5D%5BOH%5E-%5D)
![10^{-14}=[1\times 10^{-4}][OH^-]](https://tex.z-dn.net/?f=10%5E%7B-14%7D%3D%5B1%5Ctimes%2010%5E%7B-4%7D%5D%5BOH%5E-%5D)
![[OH^-]=1\times 10^{10}M](https://tex.z-dn.net/?f=%5BOH%5E-%5D%3D1%5Ctimes%2010%5E%7B10%7DM)
Thus the hydroxide ion concentration in a solution is ![1\times 10^{10}M](https://tex.z-dn.net/?f=1%5Ctimes%2010%5E%7B10%7DM)
Answer:
(a)
Explanation:
Hello,
In this case, the temperature required to boil argon, it means, transform it from liquid to gas is -197 °C. In such a way, since the temperature inside the steel sphere is -190 °C, which is greater than the boiling point, we realize argon is gaseous, therefore, the molecules will be spread inside the sphere as they will be moving based on the kinetic theory of gases.
For that reason, answer is scheme (a).
Best regards.
Answer:
Metalloids are semiconductive.
Explanation:
Answer:
solid goes on the first on and liquid goes on the sceond one
Answer:
competitive advantage of an increase in size without its limitation.