The mole fraction of methanol in the mixture is 0.444
We'll begin by calculating the number of mole of water.
- Molar mass of water = 18 g/mol
Mole = mass / molar mass
Mole of water = 45 / 18
Mole of water = 2.5 moles
Finally, we shall determine the mole fraction of methanol.
- Mole of water = 2.5 moles
- Mole of methanol = 2 moles
- Total mole = 2 + 2.5 = 4.5 moles
Mole fraction of methanol =?
Mole fraction = mole / total mole
Mole fraction of methanol = 2 / 4.5
Mole fraction of methanol = 0.444
Thus, the mole fraction of methanol is 0.444
Learn more about mole fraction:
brainly.com/question/15444997
Answer: B
Step by Step Explanation:
Answer: Calcium
Explanation:
not 100% sure but i looked it up and got calcium. 99% sure.
Answer:
Explanation:
The gas ideal law is
PV= nRT (equation 1)
Where:
P = pressure
R = gas constant
T = temperature
n= moles of substance
V = volume
Working with equation 1 we can get
![n =\frac{PV}{RT}](https://tex.z-dn.net/?f=n%20%3D%5Cfrac%7BPV%7D%7BRT%7D)
The number of moles is mass (m) / molecular weight (mw). Replacing this value in the equation we get.
or
(equation 2)
The cylindrical container has a constant pressure p
The volume is the volume of a cylinder this is
![V =(pi)*r^{2}*h](https://tex.z-dn.net/?f=V%20%3D%28pi%29%2Ar%5E%7B2%7D%2Ah)
Where:
r = radius
h = height
(pi) = number pi (3.1415)
This cylinder has a radius, r and height, h so the volume is ![V =(pi)*r^{2}*h](https://tex.z-dn.net/?f=V%20%3D%28pi%29%2Ar%5E%7B2%7D%2Ah)
Since the temperatures has linear distribution, we can say that the temperature in the cylinder is the average between the temperature in the top and in the bottom of the cylinder. This is:
Replacing these values in the equation 2 we get:
(equation 2)