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Step 1: Using the periodic table, find how many electrons are in the outer shell of the central atom. Step 2: Add one electron for every other atom that the central atom is bound to. Step 3: Look at the n...
An empirical formula is the simplest whole number ratio of atoms of each element present in the compound.1) Divide by atomic relative mass to find the number of moles. 2) Find a ratio between the moles. 3...
The first thing to do in any calculations question is to list out what you have, and what the question is asking you. In this case, the question wants pH, which is -log[H+]. So what we need is [H+]. We ha...
In phenol, one of the lone pairs of electrons in a p-orbital of the oxygen atom in the -OH group overlaps with the delocalised ring of electrons in the ring. This lone pair is partially d...
Ionic substances have high melting points because a lot of energy is required to break the strong, electrostatic forces of attraction between the oppositely charged ion in the ionic substance.
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