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Avogrado's constant = 6.02214086 × 10²³ mol^{-1 2.5/6.02=0.415 Ar of N = 14 Mr of N2 = 28 28 x 0.415=11.62}

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1. Determin oxidation numbers 2. Figure out what is being oxidised and what is being reduced. 3. Write half equations. 4. Balanc...

Firstly, we must consider the definition of first ionisation energy (1^st IE). Thermodynamically, it is the enthalpy change when one mole of electrons is removed from a mole of gaseous atoms of ...

• Fluorine is a halogen, these group 7 elements are reactive because they require just 1 additional electron to achieve a noble configuration. 

• Fluorine is the smallest halogen, ...

This question would be a 5/6 mark question- marks are displayed throughout

You always start by defining what a buffer solution is: A buffer solution is a system that minimises a change in pH on the...