Answer:
Explanation:
It tells us nothing about the amount of precipitate that will form or the temperature at which the equilibrium occurs.
Potassium (K): 1s22s22p63s23p64s1 core electrons and valence electrons
2 answers:
<u>Answer:</u> An atom of potassium contains 18 core electrons and 1 valence electrons.
<u>Explanation:</u>
Core electrons are defined as the electrons which are present in the inner shells of an atom.
Valence electrons are defined as the electrons which are present in the outermost shell of the atom.
For the given electronic configuration of potassium (K):
The outermost shell of this configuration is '4s' and rest are considered as inner shells.
Thus, an atom of potassium contains 18 core electrons and 1 valence electrons.
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<u>Answer:</u> The experimental van't Hoff factor is 1.21
<u>Explanation:</u>
The expression for the depression in freezing point is given as:
where,
i = van't Hoff factor = ?
= depression in freezing point = 0.225°C
= Cryoscopic constant = 1.86°C/m
m = molality of the solution = 0.100 m
Putting values in above equation, we get:
Hence, the experimental van't Hoff factor is 1.21