The electrons are transferred when the reaction is redox reaction. It means that there must be reduction and oxidation.
The given equation is

The oxidation number of each element remains the same before and after the reaction.
H = +1
C: +4
O: -2
N: -3
Thus this is simple acid base reaction and not redox
There is transfer of proton from bicarbonate to ammonia
this is not a redox reaction
Answer:
14 H i think , but i believe that thats the answer
The little number at the top of the element
Answer:
The answer is

Explanation:
The frequency of the photon can be found by using the formula

where
E is the energy
f is the frequency
h is the Planck's constant which is
6.626 × 10-³⁴ Js
From the question
E = 2.50 × 10^-18 J
So we have

We have the final answer as

Hope this helps you
Answer: Train
Since the train is the largest, it has more momentum. Adding the momentum to the speed, gives it the most kinetic energy. After train would come car, then bicycle, then skateboard.
Hope I helped! :)