# C2(i) - Bonding and Reactions 14.

- Created by: Alice Ugg-Boots
- Created on: 17-05-11 19:47

**The Mole.**

**"The Mole" is Simply the Name Given to a Certain Number.**

Just like a **million** is this many: **1 000 000**; or a **billion** is this many: **1 000 000 000,** so "**a mole**" is this many: **602 300 000 000 000 000 000 000** or 6**.023 x1023**.

1) It is **just a number**, but the question is why we have this number.

2) The answer is that when you get **precisely that number** of atoms of **carbon-12** it weighs exactly **12g**. So, get that number of atoms or molecules, of **any element or compound**, and conveniently, they **weigh** exactly the same number of **grams** as the relative atomic mass, Ar (or Mr) of the element or compound.This is arranged **on purpose** to make life easier.

**One mole** of atoms or molecules of any substance will have **a mass in**…

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# C2(i) - Bonding and Reactions 14.

- Created by: Alice Ugg-Boots
- Created on: 17-05-11 19:47

**The Mole.**

**"The Mole" is Simply the Name Given to a Certain Number.**

Just like a **million** is this many: **1 000 000**; or a **billion** is this many: **1 000 000 000,** so "**a mole**" is this many: **602 300 000 000 000 000 000 000** or 6**.023 x1023**.

1) It is **just a number**, but the question is why we have this number.

2) The answer is that when you get **precisely that number** of atoms of **carbon-12** it weighs exactly **12g**. So, get that number of atoms or molecules, of **any element or compound**, and conveniently, they **weigh** exactly the same number of **grams** as the relative atomic mass, Ar (or Mr) of the element or compound.This is arranged **on purpose** to make life easier.

**One mole** of atoms or molecules of any substance will have **a mass in**…

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