Please provide the choices here.
The similarity of the bands in the crystal of a metal to the atomic orbitals can be explained by the band theory of metals. In an atom, when the electrons get excited, the electrons jumps to a higher orbital so as to reach equilibrium. This is analogous to the electrons in the metals which also jumps to another band once excited by an external energy (e.g. electrical energy).
Use number of mole=mass (in grams) divided by molar mass
AKA n=m/Mr
->Using the mass (4.78g) given to you until he question. Then put the number of mole in pV=nRT but rearrange to
p=nRT divided by volume (V).
AKA p=nRT/V
Also don't forget to convert your temperature to Kelvins (add 273 to your temperature)
PH is the scale of measurement to check either the solution is acidic or basic. if the pH value is greater than 7, the solution is towards basicity and if the pH value is less than 7, the solution is towards acidity.
pKa is the dissociation constant and it is used to describe the change in pH value, when pKa is equal to pH: 50% of the ionizable group is protonated and 50% of the enzymes will be active.
So 50% of the enzymes will be active.
Well ask yourself why don't we count it in moles and you should get your answer.
