Answer:
Blue Litmus will change into red if it is added in sodium hydroxide
Explanation:
Answer:
Point C
Explanation:
Point C has the greatest potential energy because it is at that point that the riders will have maximum height
Answer:
D
Explanation:
2 substances react making them 1
The pressure of hydrogen gas formed is 720.8 mmHg.
<h3>What is Partial Pressure ?</h3>
The pressure exerted by a (specified) component in a mixture of gases.
We have to understand one thing that the Hydrogen, which is collected over water, will be mixed with water vapor.
This means that the total pressure of the mixture will have two components.
- the partial pressure of Hydrogen
- the vapor pressure of water at 21.5 C
The vapor pressure of water at that temperature is approximately
19.231 mmHg.
This means that

740 =
+ 19.231
= 740-19.231
= 720.8 mmHg
Therefore the pressure of hydrogen gas formed is 720.8 mmHg.
To know more about Partial Pressure
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Answer : The concentration of NO is, 
Solution : Given,
Concentration of
and
= 152 M
Equilibrium constant,
= 
The given equilibrium reaction is,

The expression of
will be,
![K_c=\frac{[NO]^2}{[N_2][O_2]}](https://tex.z-dn.net/?f=K_c%3D%5Cfrac%7B%5BNO%5D%5E2%7D%7B%5BN_2%5D%5BO_2%5D%7D)
Now put all the given values in this expression, we get:
![2.0\times 10^{-9}=\frac{[NO]^2}{152\times 152}](https://tex.z-dn.net/?f=2.0%5Ctimes%2010%5E%7B-9%7D%3D%5Cfrac%7B%5BNO%5D%5E2%7D%7B152%5Ctimes%20152%7D)
![[NO]=6.8\times 10^{-3}M](https://tex.z-dn.net/?f=%5BNO%5D%3D6.8%5Ctimes%2010%5E%7B-3%7DM)
Therefore, the concentration of NO is, 