An example of a physical change
is liquid water turning into vapor. Physical change is that it may involve a
change in phase but does not involve a change in molecular structure.
To answer the first question we can say that that line is associated with a transtition between an excited state and the ground state. We can explain this <span>transitions in the Lyman series, which appear in the UV region of the spectrum and all terminate at the ground electronic state of the hydrogen atom. Now for the second question I have always known that the value of n1 of this transition is 1. And the wavelenght of the longest wavelenght photon that a ground state hydrogen can absorb is 121.5 nm</span>
You get ur answer
Ex: 4.5
And put a rounding number at the end/uncertain digit
Ex: 4.50
Answer:
C combination reaction (synthesis) reaction
Explanation:
two chemicals are combined