Different fabrics rub together, and electrons may rub off
The final step in a typical titration, that is here an acid base one would be to finally find the concentration of your unknown substance whether that be the acid or the base. The other steps are used before this to come to the correct calculation and conclusion.
The way you calculate the empirical formula is to firstly assume 100g. To find each elements moles you take each elements percentage listed, times it by one mole and divide it by its atomic mass. (ex: moles of K =55.3g x 1 mole/39.1g, therefore there is 1.41432225 moles of Potassium) Once you’ve completed this for every element you list each elements symbol beside it’s number of moles and divide by the smallest number because it can only go into its self once. After you’ve done this, you’ve found your empirical formula, which is the simplest whole number ratio of atoms in a compound. I’ve added an example of a empirical question I completed last semester :)
Answer:
The value of
at 4224 K is 314.23.
Explanation:
![O_2(g)\rightleftharpoons 2O(g)](https://tex.z-dn.net/?f=O_2%28g%29%5Crightleftharpoons%202O%28g%29)
Initially
4.97 atm 0
At equilibrium
4.97 - p 2p
At initial stage, the partial pressure of oxygen gas = =4.97 atm
At equilibrium, the partial pressure of oxygen gas = ![p_{O_2}=0.28 atm](https://tex.z-dn.net/?f=p_%7BO_2%7D%3D0.28%20atm)
So, 4.97 - p = 0.28 atm
p = 4.69 atm
At equilibrium, the partial pressure of O gas = ![p_{O}=2p=2\times 4.69 atm=9.38 atm](https://tex.z-dn.net/?f=p_%7BO%7D%3D2p%3D2%5Ctimes%204.69%20atm%3D9.38%20atm)
The expression of
is given as :
![K_p=\frac{(p_{O})^2}{(p_{O_2})}](https://tex.z-dn.net/?f=K_p%3D%5Cfrac%7B%28p_%7BO%7D%29%5E2%7D%7B%28p_%7BO_2%7D%29%7D)
![K_p=\frac{(9.38 atm)^2}{0.28 atm}=314.23](https://tex.z-dn.net/?f=K_p%3D%5Cfrac%7B%289.38%20atm%29%5E2%7D%7B0.28%20atm%7D%3D314.23%20)
The value of
at 4224 K is 314.23.
3.44x10^2
you move the decimal over to get a single digit number with change. The number of times you move the decimal is the number for the 10 power