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Start with the definition of empirical formula so we know what we are trying to work out. Empirical formula is the simplest whole-number ratio of elements in a compound. First, l...

Draw the movement of electron through out the reaction. From explaining it as I go.

show CH₄ with C in the centre and 4 H atoms with bonds to it at 90^o to each other.
A hydrocarbon is a molecule that contains only hydrogen and carbon atoms.

To test for chloride ions, add silver nitrate and a white precipitate should form, then add dilute ammonia and it should re-dissolve. For bromide ions, add silver nitrate and a cream precipitate should fo...

Atoms and elements are made of protons, neutrons and electrons. The nucleus is made of protons and neutrons, and the electrons surround the nucleus, as shown in the illustration below. The sum of the numb...