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An unsaturated hydrocarbon is a molecule containing only hydrogen and carbon with a carbon carbon double bond in the molecule.

3x² + 2x + 4

Reflection: a wave hits a surface, and bounces back into the medium it was originaly in

Refraction: a wave enters a medium with a different refractive index to the original medium it was travelling...

In Ancient Greek, the aorist is the equivalent to our simple past. There are two forms of aorists: the sigmatic first aorist and the thematic second aorist.

The sigmatic first aorist is formed on t...

Starting with ∫a^x dx ,
We can re-write a^x using logs as e^ln(a)*x using some of their properties
We use the substitution u = ln(a)*x (as such du/dx = ln(a)) all...