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Write ionic half-equations for the reactions at the electrodes in aluminium extraction.

Al3+ + 3e- → Al 2O2- → O2 + 4e-

GI
2327 Views

How do I sketch accurate graphs for rational functions in a short amount of time? (I.e. A step by step guide of sketching graphs)

Often in Further Pure modules for various exam boards a common question in the exam paper will be to sketch a graph for a rational function. The step by step aproach I used is as follows:

  1. DH
    2130 Views

Explain, in general, how a catalyst works

A catalyst is a material that can speed up a reaction, but reamins chemically unchanged at the end of the reaction. A catalyst works by providing the reactants an alternative rout...

CL
Answered by Chung L. • Chemistry tutor
9522 Views

Translate the following short text into French: To celebrate my birthday, I invited my friends to my house. My mother prepared a special meal.

Pour fêter mon anniversaire, j'ai invité mes amis chez moi. Ma mère a préparé un repas spécial. 

KW
Answered by Katie W. • French tutor
4231 Views

What kind of compound is NaCl and why?

Na is a group 1 metal and Cl is a group 7 non-metal so they form an ionic bond.

OA
Answered by Ozlem A. • Chemistry tutor
5991 Views

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