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Describe how and explain why vegetable oils are hardened for use in foods.

Vegetable oils are reacted with hydrogen at 60 degrees Celcius in the presence of a nickel catalyst. This process is called hydrogenation. Vegetable oils contain carbon to carbon double bonds meaning they...

Answered by Rachel J. • Chemistry tutor

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V= 4(h^3 +1)^0.5 - 4, find dv/dh when h=2

V= 4(h³+1)^0.5- 4 dV/dh= (4x 0.5) x 3h² x (h³+1)^-0.5 => 6h²(h³+1)^-0.5 Substitute h=2 into dV/dh => (6x2

Answered by Oliver D. • Maths tutor

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On what grounds to Conservatives justify social hierarchy? (15 marks)

This is an A-level question under the topic of Introducing Political Ideologies. It is important to start 15 markers with a definition of some kind - in this case I would define social hierarchy. Social h...

Answered by Tabitha G. • Government and Politics tutor

6270 Views

How do hormones affect the menstrual cycle?

There are 3 hormones mentioned in the AQA GCSE Biology specification. These are FSH (follicle stimulating hormone), LH (leuteinising hormone), and oestrogen. FSH and LH are produced by the pituitary gland...

Answered by Vanisha M. • Biology tutor

3955 Views

What is a synapse and how does information pass across it?

A synapse is a junction between two neurones.

Information is passed from one neurone to the other in the form of a chemical (which is also known as a neurotransmitter). The chemical (neurotransmitt...

Answered by Susanne D. • Dutch tutor

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