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Mole
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===Calculating Moles===
====Calculating Moles from Masses====
The [[Periodic Table]] is needed to for [[mole]] calculations in order to find the [[Relative Atomic Mass]]es of the [[element]]s.
{| class="wikitable"
|+ Calculating Moles for Elements
|-
| style="height:20px; width:200px; text-align:center;" |Calculate the number of [[mole]]s in 36g of [[Carbon]]
| style="height:20px; width:200px; text-align:center;" |Calculate the number of [[mole]]s in 2g of [[Oxygen]]
| style="height:20px; width:200px; text-align:center;" |Calculate the number of [[mole]]s in 47g of [[Uranium-235]]
|-
| style="height:20px; width:200px; text-align:center;" |
[[Relative Atomic Mass]] of [[Carbon]] = 12g
No. [[Mole]]s = <math>{\frac{m}{A_r}}</math>
No. [[Mole]]s = <math>{\frac{36}{12}}</math>
No. [[Mole]]s = 3mol
| style="height:20px; width:200px; text-align:center;" |
[[Relative Atomic Mass]] of [[Oxygen]] = 16g
No. [[Mole]]s = <math>{\frac{m}{A_r}}</math>
No. [[Mole]]s = <math>{\frac{2}{16}}</math>
No. [[Mole]]s = 0.125mol
| style="height:20px; width:200px; text-align:center;" |
[[Relative Atomic Mass]] of [[Uranium-235]] = 235g
No. [[Mole]]s = <math>{\frac{m}{A_r}}</math>
No. [[Mole]]s = <math>{\frac{47}{235}}</math>
No. [[Mole]]s = 0.2mol
|}
{| class="wikitable"
|+ Calculating Moles for Compounds
|-
| style="height:20px; width:200px; text-align:center;" |Calculate the number of [[mole]]s in 32g of [[Methane]]
| style="height:20px; width:200px; text-align:center;" |Calculate the number of [[mole]]s in 22g of [[Carbon Dioxide]]
| style="height:20px; width:200px; text-align:center;" |Calculate the number of [[mole]]s in 115g of [[Ethanol]]
|-
| style="height:20px; width:200px; text-align:center;" |
[[Chemical Formula]] of [[Methane]] = CH<sub>4</sub>
[[Relative Atomic Mass]] of [[Carbon]] = 12g
[[Relative Atomic Mass]] of [[Hydrogen]] = 1g
[[Relative Formula Mass]] of CH<sub>4</sub> = 12 + 1 x 4
[[Relative Formula Mass]] of CH<sub>4</sub> = 16
No. [[Mole]]s = <math>{\frac{m}{M_r}}</math>
No. [[Mole]]s = <math>{\frac{32}{16}}</math>
No. [[Mole]]s = 2mol
| style="height:20px; width:200px; text-align:center;" |
[[Chemical Formula]] of [[Carbon Dioxide]] = CO<sub>2</sub>
[[Relative Atomic Mass]] of [[Carbon]] = 12g
[[Relative Atomic Mass]] of [[Oxygen]] = 16g
[[Relative Formula Mass]] of CH<sub>4</sub> = 12 + 16 x 2
[[Relative Formula Mass]] of CH<sub>4</sub> = 44g
No. [[Mole]]s = <math>{\frac{m}{M_r}}</math>
No. [[Mole]]s = <math>{\frac{22}{44}}</math>
No. [[Mole]]s = 0.5mol
| style="height:20px; width:200px; text-align:center;" |
[[Chemical Formula]] of [[Ethanol]] = C<sub>2</sub>H<sub>5</sub>OH
[[Relative Atomic Mass]] of [[Carbon]] = 12g
[[Relative Atomic Mass]] of [[Hydrogen]] = 1g
[[Relative Atomic Mass]] of [[Oxygen]] = 16g
[[Relative Formula Mass]] of CH<sub>4</sub> = 12x2 + 1x6 + 16
[[Relative Formula Mass]] of CH<sub>4</sub> = 46g
No. [[Mole]]s = <math>{\frac{m}{M_r}}</math>
No. [[Mole]]s = <math>{\frac{115}{46}}</math>
No. [[Mole]]s = 2.5mol
|}