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→About Chemical Formulae
*CO<sub>2</sub>: [[Carbon Dioxide]] with one [[Carbon]] [[atom]] and two [[Oxygen]] [[atom]]s.
*Li<sub>2</sub>O: [[Lithium Oxide]] with two [[Lithium]] [[atom]]s and one [[Oxygen]] [[atom]].
H<sub>2</sub>SO<sub>4</sub>: [[Sulphuric Acid]] with two [[Hydrogen]] [[atom]]s, one [[Sulphur]] [[atom]] and four [[Oxygen]] [[atom]]s.
Some '''chemical formulae''' are written with the [[element]]s at specific points, not all grouped together, to show where different [[element]]s are [[Chemical Bond|bonded]].
*CH<sub>3</sub>COOH: [[Ethanoic Acid]] with two [[Carbon]] [[atom]]s, two [[Oxygen]] [[atom]]s and four [[Hydrogen]] [[atom]]s. This shows that one [[Carbon]] is [[Chemical Bond|bonded]] to three [[Hydrogen]] [[atom]]s while the other [[Carbon]] is [[Double Bond|double bonded]] to one [[Oxygen]] and has a [[Single Bond|single bond]] with an [[Oxygen]], which itself it bonded to a [[Hydrogen]].