Container 2 is a closed system because the mass did not change even
though the volume changed.
<h3>What is a Closed system?</h3>
A closed system is the type of system which prohibits the transfer of
matter in and out the system.
In a closed system , the mass of the matter present is always the same
regardless of the changes which occurred which is why option D is the
most appropriate option.
Read more about Closed system here brainly.com/question/3690180
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I'm a pharmacy dispenser which is the same thing. what's your question?
Answer:
[OH] = 6.31 * 10^-7 M
Explanation:
Mathematically;
pH + pOH = 14
Mathematically;
pH = -log [H3O+]
also;
pOH = -log [OH]
From the question; [H3O+] = 1.75 * 10^-8 M
pH = -log [1.75 * 10^-8]
pH = 7.76
since pH is normally given to 1 decimal place
we can say pH = 7.8
Now;
pH + pOH = 14
pOH = 14-7.8
pOH = 6.2
now pOH = -log [OH]
[OH] = -antilog 6.2
[OH] = 6.31 * 10^-7 M