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→Finding the Empirical Formula
{| class="wikitable"
| style="height:20px; width:200px; text-align:center;" |'''Number of Atoms'''
| style="height:20px; width:200px; text-align:center;" |'''PictureSkeletal Diagram'''| style="height:20px; width:200px; text-align:center;" |'''Structural DiagramBall and Stick Model'''
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| style="height:20px; width:200px; text-align:center;" |100 [[atom]]s of [[Hydrogen]] [[Chemical Reaction|react]] completely with 50 [[atom]]s of [[Oxygen]].
So the '''empirical formula''' is C<sub>2</sub>H<sub>5</sub>O
|}
{| class="wikitable"
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| style="height:20px; width:200px; text-align:center;" |64g of [[Oxygen]] is found to [[Chemical Reaction|react]] completely with 8g of [[Hydrogen]]. Find the '''empirical formula''' for the [[product]].
| style="height:20px; width:200px; text-align:center;" |60g of [[Carbon]] is found to [[Chemical Reaction|react]] completely with 160g of [[Oxygen]]. Find the '''empirical formula''' for the [[product]].
| style="height:20px; width:200px; text-align:center;" |416g of [[Sulphur]] is found to [[Chemical Reaction|react]] completely with [[Oxygen]] to produce 832g of [[product]]. Find the '''empirical formula''' for the [[product]].
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| style="height:20px; width:200px; text-align:left;" |
[[Mass]] of [[Oxygen]] = 64g
[[Relative Atomic Mass]] of [[Oxygen]] = 16g
[[Mole]]s of [[Oxygen]] = 64/16
[[Mole]]s of [[Oxygen]] = 4 mole
[[Mass]] of [[Hydrogen]] = 8g
[[Relative Atomic Mass]] of [[Hydrogen]] = 1g
[[Mole]]s of [[Hydrogen]] = 8/1
[[Mole]]s of [[Hydrogen]] = 8 mole
[[Hydrogen]]:[[Oxygen]]
8:4
2:1
The '''empirical formula''' of the [[product]] is H<sub>2</sub>O
| style="height:20px; width:200px; text-align:left;" |
[[Mass]] of [[Carbon]] = 60g
[[Relative Atomic Mass]] of [[Carbon]] = 12g
[[Mole]]s of [[Carbon]] = 60/12
[[Mole]]s of [[Carbon]] = 5 mole
[[Mass]] of [[Oxygen]] = 160g
[[Relative Atomic Mass]] of [[Oxygen]] = 16g
[[Mole]]s of [[Oxygen]] = 160/16
[[Mole]]s of [[Oxygen]] = 10 mole
[[Carbon]]:[[Oxygen]]
5:10
1:2
The '''empirical formula''' of the [[product]] is CO<sub>2</sub>
| style="height:20px; width:200px; text-align:left;" |Text
[[Mass]] of [[Sulphur]] = 416g
[[Relative Atomic Mass]] of [[Sulphur]] = 32g
[[Mole]]s of [[Sulphur]] = 416/32
[[Mole]]s of [[Sulphur]] = 32 mole
[[Mass]] of [[Oxygen]] = 416g
[[Relative Atomic Mass]] of [[Oxygen]] = 16g
[[Mole]]s of [[Oxygen]] = 416/16
[[Mole]]s of [[Oxygen]] = 26 mole
[[Sulphur]]:[[Oxygen]]
13:26
1:2
The '''empirical formula''' of the [[product]] is SO<sub>2</sub>
|}