There are 24 molecules idk it maybe right
Answer:
A. 0525.
B. 0.3483 atm.
C. 0.3890.
Explanation:
A.
Molar mass of Benzene =
(12*6) + (1*6)
= 78 g/mol.
Number of moles of Benzene = mass/molar mass
= 50/78
= 0.641 moles.
Molar mass of n-hexane =
(12*6) + (1*14)
= 86 g/mol.
Number of moles of n-hexane = mass/molar mass
= 50/86
= 0.581 moles.
Total moles of the solution = number of moles of Benzene + number of moles of n-hexane
= 0.641 + 0.581
= 1.222 moles
Mole fraction is the number of moles of a particular substance in a solution divided by the total number of moles of substances in the solution.
Mole fraction of Benzene = 0.641/1.222
= 0.525.
B.
Vapour Pressure of a solution is the amount of pressure that the vapour exert on the liquid solvent when they are in equilibrium and at a certain temperature.
Uaing Raouit's law and Dalton's law,
Raoult's law states that the the partial pressure of a solution is directly proportional to the mole fraction of the solute component.
Dalton's law states that the total pressure of a solution is the sum of its individual partial pressure.
Uaing Dalton's law,
Psol = Pbenzene + Pn-hexane
= 0.1355 + 0.2128
= 0.3483 atm
C.
Using Raoult's equation, Mole fraction of Benzene = P°benzene/Psol
= 0.1355/0.3483
= 0.3890
Explanation:
The given data is as follows.
Change in Potential Energy = 
Formula for change in potential energy is as follows
Change in Potential Energy = 
Hence, the potential difference between the two points will be as follows.
V = 
=
volt
Therefore, the potential due to two charge initially is as follows.
V = 
=
volt
Hence,
volt = ![9 \times 10^{9} \times 1.602 \times 10^{-19}[\frac{1}{r} - \frac{1}{0.52}]](https://tex.z-dn.net/?f=9%20%5Ctimes%2010%5E%7B9%7D%20%5Ctimes%201.602%20%5Ctimes%2010%5E%7B-19%7D%5B%5Cfrac%7B1%7D%7Br%7D%20-%20%5Cfrac%7B1%7D%7B0.52%7D%5D)
r = 0.493 m = 49.3 cm (as 1 m = 100 cm)
Thus, we can conclude that the final distance between the electron and proton is 49.3 cm.