NaOH is a strong base so pH will be around 13 to 12. Whatever number of moles of NaOH you have approximately the pH of NaOH will be around 14 13 or 12
Answer:
4.90 moles of
will produce (9.8) moles of
,
(4.90) moles of
and
(39.2) moles of ![O^{2-}](https://tex.z-dn.net/?f=O%5E%7B2-%7D)
Explanation:
From the question we are told that
The number of moles of is ![n = 4.90 \ mols](https://tex.z-dn.net/?f=n%20%3D%20%204.90%20%20%5C%20mols)
The formation reaction of
is
From the reaction we see that
1 mole of
is formed by 2 moles of
1 mole of
and 4 ![O^{2-}](https://tex.z-dn.net/?f=O%5E%7B2-%7D)
This implies that
4.90 moles of
will produce (2 * 4.90) moles of
,
(1 * 4.90) moles of
and
(8 * 4.90) moles of ![O^{2-}](https://tex.z-dn.net/?f=O%5E%7B2-%7D)
So
4.90 moles of
will produce (9.8) moles of
,
(4.90) moles of
and
(39.2) moles of ![O^{2-}](https://tex.z-dn.net/?f=O%5E%7B2-%7D)
Answer:
I think is the last one.
Anthracite – Stage Four
Anthracite, the fourth stage in coal formation, is also known as “hard coal” because it is hard and has a high lustre. It appears to have been formed as a result of combined pressure and high temperature. Anthracite burns with a short flame and little smoke.
Answer:
D. Separation by melting point