Bright Line Emission Spectrum: As the excited electron returns to ground state (it's lower energy level) the energy it originally absorbed is released as discrete lines of light.
For i: 33mL
For ii: 87-88mL
For iii:22.3mL
X=0.031903 I think if you don’t know how to do this photo math would be a good thing for you
The number of protons an element has is the same as the atomic number, so the element would have 86 protons.
It is a Compound.
Water can't be a mixture because it is chemically bonded and cannot be separated into H2 and O by physical means.
And water cannot be an element, because it is made of atoms of different types [H and Oxygen]
