[Hunter2]

No , it is the square root of 0.218 not the second Power.
I you have a reaction

A => B + 0.5 C

Then K = B* sqr(C)/ A

So let say 40% decompose of 0,8

Then K = 0,32*sqr(0,16)/0,48

[bmcevoy1776]

its my typo. but i assure you its raised to the stochiometric coefficient. the 1st problem was 2. but the question with the pictures is the 1/2 power. that's the theorem. but the question is why is it being raised to the co efficient twice. all the problems raises it to the coefficients power  twice

[Hunter2]

The formula is



https://i.ytimg.com/vi/MGn62nR8TnA/maxresdefault.jpg

[bmcevoy1776]

all this tells me is khan academy sucks. no 1 has told me yes its correct & here is why, or no khan academy sucks at chemistry its not the correct answer. but chat gpt did the same thing without being prompted. was the other 1 raised to its coefficient twice as well but since its 1 it equals the original ??

[Hunter2]

I realy don't get what you are talking about. Show the problem you not understand.

In the law of mass Action the stoichometric coefficients go as exponent.


2A => 3 B  K = B^3/A^2 for example.

[Borek]

I am starting to wonder if when OP writes "squared" it doesn't sometimes mean "multiplied by 2" and sometimes "squared".

in this example .436 raised to the 1/2 power is .218

0.218 is half of 0.436, not square root of 0.436 (which is 0.466)

but they show .218 raised to the 1/2 power again in the final theorem

For some reason we probably don't see what you see, but perhaps what is really happening is they multiply by a stoichiometric coefficient to calculate amount in the first stage (just applying simple stoichiometry), then use the stoichiometric coefficient in the K formula to raise the concentration to the second power. So it is not "squaring" twice, it is multiplying and then squaring in two different stages of solving the problem: follow the stoichiometry first, plug into K formula second.

not my fault they explain it like assholes. this would be raising it to the stoichiometric coefficient 2 different times.

Please calm down, blaming everyone around won't get you far.