A solution is when a solute is dissolved by a solvent. Mixture is practically when one doesn't dissolve or doesn't combine chemically and thus becomes a cloudy or foggy.
If I'm not wrong... A mixture is never a solution.
The to your question is B
Answer:
Units of k = 
Explanation:
According to the law of mass action, the rate of a reaction is determined as the product of the active concentration of the reactant each raised to their experimentally determined coefficients which are known as order.
So, given that:-
Rate = k [X]
Rate of the reaction is also, the change in the concentration per unit time. So, the units of rate of a reaction is :- M/s
Units of [X] = M
So,
![k=\frac{Rate}{[X]}=\frac{M/s}{M}=s^{-1}](https://tex.z-dn.net/?f=k%3D%5Cfrac%7BRate%7D%7B%5BX%5D%7D%3D%5Cfrac%7BM%2Fs%7D%7BM%7D%3Ds%5E%7B-1%7D)
Units of k = 
Answer:
The words that have some thing match them together and that’s your answer!
Explanation: