Answer:
21.60% is the percent ionization of a 0.123 M solution of this acid.
Explanation:
The equilibrium reaction for dissociation of weak acidis,
initially conc. c 0 0
At eqm. 
Concentration of the weak acid (c) = 0.123 M
Acid dissociation constant = 
Degree of ionization of weak acid = 
An expression of dissociation constant is given as:
Percent ionization of weak acid:
The element that she discovered was radium.
The ⁴⁰₁₈X is the symbol for ⁴⁰₁₈Ar - atom and it has 18 protons, 18 electrons, and 22 neutrons.
<h3>What is Mass number ?</h3>
Mass number is the sum of the numbers of protons and neutrons present in the nucleus of an atom.
In the given element, ⁴⁰₁₈X, Subscript 18 is the number of proton and is also equal to the number of electron. While supercript 40 is the atomic mass.
The number of neutrons is given by subtracting the proton number from the mass number.
Therefore,
Number of Neutron = Mass Number - Atomic Number
= 40 - 18
= 22 Neutrons
Learn more about Mass number here ;
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Answer:
Experimentation is the best way to obtain knowledge.
Explanation:
This is a statement and it is scientific
<span>c.
reactivity
this is a physical property depends on how reactive something is</span>
