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Based on Newton's 3 laws of motion why is linear momentum always conserved?

This is a common IB question- fairly tricky the first time you com across it!

ST
Answered by Simon T. • Physics tutor
2601 Views

What is meant by Parsons 'instrumental' and 'expressive' roles?

This is an important theory when looking at the domestic division of labour from a functionalist perspective. Parsons (1955) argues that in the nuclear family the husband and wife have different separa...

FH
54124 Views

Explain the trend in Ionisation energy when moving across a period and down a group

Key definitions/explanation of terms

Ionisation energy is the energy required to remove one mole of electrons from 

OF
Answered by Olivia F. • Chemistry tutor
14079 Views

Explain which species is oxidised in this reaction: Br2 +2I– = 2Br– +I2

A useful way to answer oxidation/reduction questions is to remeber the acronym OIL RIG:

Oxidation Is Loss (of electrons) 

...

RB
Answered by Rory B. • Chemistry tutor
35692 Views

Explain which species is oxidised in this reaction: Br2 +2I– 2Br– +I2.

A useful way to answer oxidation/reduction questions is to remeber the acronym OIL RIG:

Oxidation Is Loss (of electrons) 

...

RB
Answered by Rory B. • Chemistry tutor
9093 Views

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