Alcohol is a pure substance
Answer : The final number of moles of gas that withdrawn from the tank to lower the pressure of the gas must be, 0.301 mol.
Explanation :
As we know that:
![PV=nRT](https://tex.z-dn.net/?f=PV%3DnRT)
At constant volume and temperature of gas, the pressure will be directly proportional to the number of moles of gas.
The relation between pressure and number of moles of gas will be:
![\frac{P_1}{P_2}=\frac{n_1}{n_2}](https://tex.z-dn.net/?f=%5Cfrac%7BP_1%7D%7BP_2%7D%3D%5Cfrac%7Bn_1%7D%7Bn_2%7D)
where,
= initial pressure of gas = 24.5 atm
= final pressure of gas = 5.30 atm
= initial number of moles of gas = 1.40 moles
= final number of moles of gas = ?
Now put all the given values in the above expression, we get:
![\frac{24.5atm}{5.30atm}=\frac{1.40mol}{n_2}](https://tex.z-dn.net/?f=%5Cfrac%7B24.5atm%7D%7B5.30atm%7D%3D%5Cfrac%7B1.40mol%7D%7Bn_2%7D)
![n_2=0.301mol](https://tex.z-dn.net/?f=n_2%3D0.301mol)
Therefore, the final number of moles of gas that withdrawn from the tank to lower the pressure of the gas must be, 0.301 mol.
Filtration is a method for separating an insoluble solid from a liquid.
Answer:
Solute concentration will afect the rate of a chemical reaction, because you must work with molarity
Explanation:
I think that solute mass may be it can affect the rate of reaction, if you have more mass in a solute, you will also have more moles.
If you want to know more, you have to consider temperature in the reaction and the presence of catalysts. They all, affect reactions.