The correct answer is A.
Electrochemistry: the study of electrical and chemical occurrences or phenomena
Answer : The correct option is, (C) ![403.6cm^3](https://tex.z-dn.net/?f=403.6cm%5E3)
Explanation :
The formula used for the volume expansion coefficient is:
![V_{final}=V_{initial}\times (1+\gamma \Delta T)](https://tex.z-dn.net/?f=V_%7Bfinal%7D%3DV_%7Binitial%7D%5Ctimes%20%281%2B%5Cgamma%20%5CDelta%20T%29)
where,
= final volume of mercury = ?
= initial volume of mercury = ![400.0cm^3](https://tex.z-dn.net/?f=400.0cm%5E3)
= volume expansion coefficient = ![180\times 10^{-6}K^{-1}](https://tex.z-dn.net/?f=180%5Ctimes%2010%5E%7B-6%7DK%5E%7B-1%7D)
= change in temperature = ![50^oC-0^oC=50^oC](https://tex.z-dn.net/?f=50%5EoC-0%5EoC%3D50%5EoC)
Now put all the given values in the above formula, we get:
![V_{final}=400.0\times [1+(180\times 10^{-6}\times 50)]](https://tex.z-dn.net/?f=V_%7Bfinal%7D%3D400.0%5Ctimes%20%5B1%2B%28180%5Ctimes%2010%5E%7B-6%7D%5Ctimes%2050%29%5D)
![V_{final}=403.6cm^3](https://tex.z-dn.net/?f=V_%7Bfinal%7D%3D403.6cm%5E3)
Therefore, the final volume of mercury is ![403.6cm^3](https://tex.z-dn.net/?f=403.6cm%5E3)
The answer is c 3 molecules