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| style="height:20px; width:200px; text-align:center;" |[[Hydrochloric Acid]] [[molecule]]s have 1 [[Hydrogen]] [[atom]] and 1 [[Chlorine]] [[atom]].
| style="height:20px; width:200px; text-align:center;" |[[Sulphuric Acid]] [[molecule]]s have 2 [[Hydrogen]] [[atom]]s, 1 [[Sulphur]] [[atom]] and 4 [[Oxygen]] [[atom]]s.
| style="height:20px; width:200px; text-align:center;" |[[Propanol]] or [[Propan-1-ol]] has 3 [[Carbon]] [[atom]]s and 8 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] atom. This has the same '''chemical formula''' as [[Propan-2-ol]] but a different shape. This may be written with the [[Structural Formula|structural formula]] '''CH<sub>3</sub>⋅CHCH<sub>2</sub>⋅CHCH<sub>2</sub>OH''' to show where the OH group is attached.| style="height:20px; width:200px; text-align:center;" |[[Isopropyl Alcohol]] or [[Propan-2-ol]] has 3 [[Carbon]] [[atom]]s and 8 [[Hydrogen]] [[atom]]s and 1 [[Oxygen]] atom. This has the same '''chemical formula''' as [[Propan-1-ol]] but a different shape. This may be written with the [[Structural Formula|structural formula]] '''CH<sub>3</sub>⋅CHOH⋅CHCHOHCH<sub>3</sub>''' to show where the OH group is attached.
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