Answer:
<h3>
C. 3</h3>
Explanation:
there are three electrons in a 2p sub-energy level of s neutral nitrogen atom.
Equilibrium is dynamic since the reaction never really stops. There is still a forward and reverse reaction, their rates are just equal to each other so there is no observable change in the amounts of product or reactant making it look like the reaction has stopped.
This is why you will often here the term dynamic equilibrium used when describing a system in equilibrium.
I hope this helps. Let me know if anything is unclear.
A. Variables, this is because you can choose what you're testing
Answer:
Explanation:
Hello,
In this case, for the reaction:
We first must assign the oxidation state of each element:
Thus, we should remember that the oxidation half-reaction applies for the element undergoing an increase in its oxidation state, such case is sulfur, for which passes from 0 to +4 as shown below:
It means, that four electrons were lost due to the effect of the strong oxidizing agent, potassium dichromate.
Best regards.
