<span>Propane is C3H8
The balanced equation is:
C3H8 + 5 O2 --> 3 CO2 + 4 H2O
From the balanced equation you can see that for each mole of C3H8 you obtain 4 moles of H2O.
moles H2O = 5.0 moles C3H8(4 moles H2O/1 mole C3H8) = 20 moles H2O formed
Use Avogadro's number to find the number of molecules.
molecules H2O = 20 moles H2O(6.02 x 10^23 molecules/1 mole) = 1.20 x 10^25 H2O molecules</span><span>
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It’s used by demographers to represent and understand the structure, growth and evolution of human populations
When multiplying by a constant, raise Kp to the power of that constant.
When the reaction is reversed, it gives the inverse of Kp.
Kp^(-1/2) = (7.8 x 10^-16)^(-1/2) = 3.6 x 10^7
Answer:
A. K = 59.5
Explanation:
Hello there!
In this case, since this reaction seems to start moving leftwards due to the fact that neither A nor Y are present at equilibrium, we should rewrite the equation:
3C (g) + D (g) <-- --> 2A (g) + Y (g)
Thus, the equilibrium expression is:
![K^{left}=\frac{[A]^2[Y]}{[C]^3[D]}](https://tex.z-dn.net/?f=K%5E%7Bleft%7D%3D%5Cfrac%7B%5BA%5D%5E2%5BY%5D%7D%7B%5BC%5D%5E3%5BD%5D%7D)
Next, according to an ICE table for this reaction, we find that:
![[A]=2x](https://tex.z-dn.net/?f=%5BA%5D%3D2x)
![[Y]=x](https://tex.z-dn.net/?f=%5BY%5D%3Dx)
![[C]=0.651M-3x](https://tex.z-dn.net/?f=%5BC%5D%3D0.651M-3x)
![[D]=0.754M-x](https://tex.z-dn.net/?f=%5BD%5D%3D0.754M-x)
Whereas x is calculated by knowing that the [C] at equilibrium is 0.456M; thus:

Next, we compute the rest of the concentrations:
![[A]=2(0.065M)=0.13M](https://tex.z-dn.net/?f=%5BA%5D%3D2%280.065M%29%3D0.13M)
![[Y]=0.065M](https://tex.z-dn.net/?f=%5BY%5D%3D0.065M)
![[D]=0.754M-0.065M=0.689M](https://tex.z-dn.net/?f=%5BD%5D%3D0.754M-0.065M%3D0.689M)
Thus, the equilibrium constant for the leftwards reaction is:

Nonetheless, we need the equilibrium reaction for the rightwards reaction; thus, we take the inverse to get:

Therefore, the answer would be A. K = 59.5.
Regards!