Answer:
The correct answer is option 3.
Explanation:
2A → B + C
First trial ;
[A] = x , Rate of the reaction = R
Rate law of the reaction can be written as:
![R=k[x]^a](https://tex.z-dn.net/?f=R%3Dk%5Bx%5D%5Ea)
..[1]
Second trial ;
[A] = 3x , Rate of the reaction = R' = 9R
Rate law of the reaction can be written as:
![R'=k[3x]^a](https://tex.z-dn.net/?f=R%27%3Dk%5B3x%5D%5Ea)
![9R=k[3x]^a](https://tex.z-dn.net/?f=9R%3Dk%5B3x%5D%5Ea)
..[2]
[1] ÷ [2]
![\frac{R}{9R}=\frac{k[x]^a}{k[3x]^a}](https://tex.z-dn.net/?f=%5Cfrac%7BR%7D%7B9R%7D%3D%5Cfrac%7Bk%5Bx%5D%5Ea%7D%7Bk%5B3x%5D%5Ea%7D)
a = 2
Rate of the reaction : ![R=k[A]^3](https://tex.z-dn.net/?f=R%3Dk%5BA%5D%5E3)
The order of the reaction is 2. This is because in the rate law expression the the power of the concentration of reactant A id 2.
Answer:
I think that the answer is B or a
Explanation:
Its unstable and flammable... the Hindenberg used it... we saw how that went
Answer:c
=
0.0253 M
Explanation:
Molarity is a measure of a solution's concentration in terms of how many moles of solute it contains per liter of solution.
So, in essence, if you have the number of moles of solute, like you do here, and the total volume of the solution expressed in liters, you can find how many moles of solute you get per liter, i.e. the molarity of the solution.
Keeping in mind the fact that the moles of solute are distributed evenly in any given volume of the solution, you can say that because
7.98 L
of solution contain
0.202
moles of solute, which in your case is potassium chloride,
KCl
,
1 L
of this solution will contain
1
L
⋅
0.202 moles KCl
7.98
L
=
0.0253 moles KCl
So, if your solution contains
0.0253
moles of potassium chloride per liter, it follows that its molarity is equal to
c
=
0.0253 M
Here
M
is equivalent to
mol/L
, or molar.
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