Explanation:
The equilibrium constant of the reaction =
Initial concentration of HI = 0.311 M
After addition 0.174 mol of HI(g)
Concentration of HI added = 
New concentration of HI = 0.311 M + 0.174 M = 0.485 M

Initial concentration:
0.311 M
At equilibrium:
(0.485 M - x)
![K_{eq}=\frac{[H_2][I_2]}{[HI]^2}](https://tex.z-dn.net/?f=K_%7Beq%7D%3D%5Cfrac%7B%5BH_2%5D%5BI_2%5D%7D%7B%5BHI%5D%5E2%7D)






Equilibrium concentrations:
![[HI]=0.485 M-x = 0.485 M - 0.01586 M= 0.46914 M](https://tex.z-dn.net/?f=%5BHI%5D%3D0.485%20M-x%20%3D%200.485%20M%20-%200.01586%20M%3D%200.46914%20M)
![[H_2]=[I_2]=4.71\times 10^{-2} M+x=4.71\times 10^{-2} M+0.01586 M](https://tex.z-dn.net/?f=%5BH_2%5D%3D%5BI_2%5D%3D4.71%5Ctimes%2010%5E%7B-2%7D%20M%2Bx%3D4.71%5Ctimes%2010%5E%7B-2%7D%20M%2B0.01586%20M)
![[H_2]=[I_2]=0.06296 M](https://tex.z-dn.net/?f=%5BH_2%5D%3D%5BI_2%5D%3D0.06296%20M)
Answer:
•Matter is made up of smallest indivisible particle named as atom.
•All atom of same element have equal atomic mass and identical properties.
•Compounds are made up two or more different types of atoms.
•In a chemical reaction rearrangement of atoms takes place.
•Atoms of different elements differ in mass and size.
Answer:
The answer to your question is: 30 g
Explanation:
Data
mass of water = 25 g
mass of salt = 5 g
Process
total mass = mass of water + mass of salt
= 25 + 5
= 30 g
Answer:b
Explanation:
I just answered it on apex