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At room temperature and pressure, the first 4 alkanes are all gases, but the first 4 alcohols are all liquids. Explain this.

Alkanes are non-polar so only have London forces between them. These intermolecular bonds are weak, and easily overcome with little energy. This means that alkanes have a low boiling point hence they are ...

AE
Answered by Ayolola E. Chemistry tutor
15943 Views

In a perfectly competitive labour market, explain how equilibrium wages are determined by the forces of supply and demand.

The labour market is a factor market, which is a market where the factors of production are traded. The supply of labour comes from the pool of economically active citizens who want to be employed. Labour...

AJ
Answered by Anish J. Economics tutor
2423 Views

Outline two cognitive explanations for depression (6 marks).

One cognitive explanation involves Ellis’s ‘ABC Model’ (1962). Ellis explains that the key to depression lies in irrational thinking. ‘A’ represents an activating...

SS
Answered by Simran S. Psychology tutor
15404 Views

When a nerve impulse arrives at a synapse, it causes the release of neurotransmitter from vesicles in the presynaptic knob. Describe how.

Membrane depolarisation arrives at the pre-synpase and causes Ca2+ voltage-gated channels to open. This allows Ca2+ ions to diffuse in the presynapse via the activated Ca2+ channels. Ca2+ influx in the pr...

GM
Answered by Georgios M. Biology tutor
7776 Views

How to we acquire monoclonal antibodies

Firstly - What are antibodies? Antibodies are part of the immune system which are specific to the pathogen. They help destroy the pathogen.And what are monoclonal antibodies? They're just antibodies that ...

HG
Answered by Helen G. Biology tutor
2605 Views

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