Answer:
C8H12F6
Explanation:
To solve this question we need to find the moles of each atom in order to find the empirical formula (The empirical formula is defined as the simplest whole-number ratio of atoms present in a molecule). Using the empirical formula and the molar mass we can find molecular formula as follows:
<em>Moles C:</em>
2.35g * (1mol / 12g) = 0.1958 moles C
<em>Moles H:</em>
0.294g (1mol /1g) = 0.294 moles H
<em>Moles F -Molar mass: 19.0g/mol-: </em>
Mass F: 5.43g - 2.35g C - 0.294g H = 2.786g F * (1mol / 19.0g) = 0.1466 moles F
The moles of atoms dividing in the moles of F (Lower number of moles) produce the simplest ratio as follows:
C = 0.1958mol C / 0.1466mol F = 1.33
H =0.294mol H / 0.1466mol F = 2
F = 0.1466 mol F / 0.1466mol F = 1
As the empirical formula requires whole numbers, this ratio multiplied 3 times:
C = 4
H = 6
F=3
The empirical formula is:
C4H6F3
With molar mass of:
4C = 12*4 = 48
6H = 1*6 = 6
3F = 19*3 = 57
The molar mass is: 48g/mol + 6g/mol + 57g/mol = 111g/mol
As we know the molecule has a molar mass between 219-225g/mol and the empirical formula is 111g/mol, 2 times empirical formula will produce a molecule with the molar mass of the molecule, that is:
<h3>C8H12F6</h3>
Answer : The pH will be, 3.2
Explanation :
As we known that the value of solubility constant of ferric hydroxide at 
is, 
Amount or solubility of iron consumed = (1.800 - 0.3) mg/L = 1.5 mg/L
The given solubility of iron convert from mg/L to mol/L.
The chemical reaction will be:
The expression of solubility constant will be:
![K_{sp}=[Fe^{3+}]\times [3OH^-]^3](https://tex.z-dn.net/?f=K_%7Bsp%7D%3D%5BFe%5E%7B3%2B%7D%5D%5Ctimes%20%5B3OH%5E-%5D%5E3)
Now put all the given values in this expression, we get the concentration of hydroxide ion.
![2.79\times 10^{-39}=(2.7\times 10^{-7})\times [3OH^-]^3](https://tex.z-dn.net/?f=2.79%5Ctimes%2010%5E%7B-39%7D%3D%282.7%5Ctimes%2010%5E%7B-7%7D%29%5Ctimes%20%5B3OH%5E-%5D%5E3)
![[OH^-]=1.5\times 10^{-11}M](https://tex.z-dn.net/?f=%5BOH%5E-%5D%3D1.5%5Ctimes%2010%5E%7B-11%7DM)
Now we have to calculate the pOH.
![pOH=-\log [OH^-]](https://tex.z-dn.net/?f=pOH%3D-%5Clog%20%5BOH%5E-%5D)
Now we have to calculate the pH.
Therefore, the pH will be, 3.2
Answer:
Saturated Fats
Explanation:
Saturated fats are all of the above.
Also, Saturated fat is very unhealthy. Only consume it in small amounts.
Answer:
A:There must be diversity in the population.
Explanation:
Hopefully this helps!
