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Why is graphene able to conduct electricity.

Graphene is a giant covalent compound made purely of carbon atoms. Within graphene each carbon atom is covalently bound to just 3 other carbon atoms. A carbon atom usually makes 4 covalent bonds. This means ...
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Answered by Stella W. • Chemistry tutor
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What is active transport and how is it different from diffusion?

Active transport is the movement of ions or molecules across a cell membrane against a concentration gradient. It requires energy in the form of ATP.Active transport is different to diffusion as diffusion is...
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Answered by Stella W. • Biology tutor
3884 Views

What is an enzyme and explain its mechanism of action

An enzyme is a protein that is used as a catalyst in a reaction within an organism. This is used in such a way that it lowers the energy requirement for a specific reaction to occur and this could either be ...
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Answered by Michael B. • Biology tutor
3699 Views

Simplify fully (3x^2-8x-3)/(2x^2-6x)

3x^2-8x-3 factorises into (3x+1)(x-3)2x^2-6x fatorises into 2x(x-3)Common factor between the numerator and denominator is (x-3)therefore the final answer is (3x+1)/2x
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Answered by Michael B. • Maths tutor
5006 Views

Walk me through the separation of an insoluble solid from a liquid

We’d use filtration. The mixture is poured over filterpaper in a funnel. The solid(residue) is left behind and the filtrate is pure liquid with no solid.
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Answered by Rocco P. • Chemistry tutor
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