Melting points and boiling points of molecular compound are usually lower than ionic compounds. This is so as only a small amount of energy is required to overcome the weak intermolecular forces of attraction (Van de Waals forces) thus having lower m.p. and b.p.
Ionic compounds require a large amount of energy to overcome the strong electrostatic forces of attraction between the ions, hence having higher mp and bp
There would be <span>production of acetic acid from moisture that gets inside the bottle. What happens is that water molecules reacts with the aspirin protonating an oxygen in the acetic group and allowing it to detach from the molecule producing acetic acid which is the main cause of the vinegar smell.</span>
The total number of Ca2+ ions and F- ions that are present in the cubic unit cell will be 4 and 8 respectively.
<h3>How to calculate the unit cell?</h3>
From the complete information, the number of Ca2+ at corners will be (8 × 1/8 = 1) and those a the center will be (6 × 1/2 = 3). Therefore, the total number of Ca2+ will be:
= 1 + 3 = 4
The total number of F- ions will be:
= 4 × 2 = 8
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Explanation:
For an effective use of a laboratory with protection and safety for all, there must be rules and policies that must be strictly disseminated and followed by anyone who uses a laboratory for a specific purpose, such as the use of specific clothes and goggles.
However, in the event of a small fire, the ideal is to notify the laboratory instructor, and exit the emergency exits in an orderly and quick manner.