Plz need answer 20 complete the sentence. the lower the hydrogen ion concentration, the the ph. higher lower closer to 7 closer to 020 pts

The lower the hydrogen ion concentration, the higher the pH.  

Step-by-step explanation:

This effect comes from the definition of pH:

pH = -log[H₃O⁺]

Consider two solutions.

Solution A has [H₃O⁺] = 10⁻¹ mol·L⁻¹; Solution B has [H₃O⁺] = 10⁻¹⁰ mol·L⁻¹.

Solution B has the lower [H₃O⁺].

Now, take the logarithm of each concentration.

Solution A: log[H₃O⁺] = log10⁻¹ = -1; Solution B: log[H₃O⁺] = log10⁻¹⁰ = -10

Solution B still has the lower value.

However, pH is the negative logarithm.

When we take negative logarithms, we get

Solution A: pH = 1; Solution B: pH = 10

Solution B has the lower [H₃O⁺], but the higher pH.

The lower the hydrogen ion concentration, the higher the pH.  

a. a primary source combines several different accounts of an event. b. a primary source generally benefits from having been written after an event.

explanation:

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.