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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...

Answered by Francesca H. • Sociology tutor

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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

Answered by Olivia F. • Chemistry tutor

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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)

...

Answered by Rory B. • Chemistry tutor

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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)

...

Answered by Rory B. • Chemistry tutor

9015 Views

How do I solve simultaneous equations?

Simeltanous equations are a pair of equations that have 2 unknows. In order to solve a simelatneous equation 1 of the unknows must be eliminated. This can be done by either:

1. Substitut...

Answered by Rory B. • Maths tutor

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