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Chemistry
A Level

What is a Sodium Potassium Pump? How does it work?

The sodium potassium pump (sodium potassium ATPase) is an enzyme found in the membrane of all animal cells. Its job is to move NA+ out of the cell and K+ in the cell against their concentration gradient. ...

Answered by Matilde M. Chemistry tutor
26022 Views

What is meant by the term homologous series?

A series of compounds with the same functional group, having similar chemcial properties and reactions.

Answered by Humza C. Chemistry tutor
5912 Views

Why is Kekule's benzene structure an inaccurate representation of the molecule?

Firstly all of benzene's bonds are the same length and therefore there cannot be both double bonds and single bonds in the molecule. Secondly the bond angles are all the same as well which would not be th...

Answered by Patrick M. Chemistry tutor
20367 Views

State whether the following conduct electricity as solid or molten: Aluminium, Aluminium fluoride, Boron tribromide

We start with aluminium (Al). Al conducts electricity in both solid and molten states, this is because Al has metallic bonding between fixed positive Al^(3+) ions and delocalised electrons. The delocalise...

Answered by Tom T. Chemistry tutor
32462 Views

Why do ionisation energies typically increase upon going across a period yet decrease upon going down a group?

‘Ionisation energy’ is the term used to describe the amount of energy it takes to remove an electron from an atom to form a positively charged ion. It is usually represented by the unit kJ/mol, meaning it...

Answered by Lewis M. Chemistry tutor
2100 Views

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