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Why does increasing the concentration of a reactant increase the rate of reaction?

Increasing the concentration of a reactant is the same as increasing the concentration of squash- there are more particles in a solution and in a given space. More particles mean that there is a greater chan...
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Answered by Rhianna R. • Chemistry tutor
4922 Views

L'importanza dei libri

Oggi parlerò dei libri perché sono molto importante nella mia vita. Mi hanno aiutato moltissimo specialmente nel passato, quando volevo evitare il mondo reale. Anche, è necessario che dica i libri siano fond...
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Answered by Isabella S. • Italian tutor
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Outline the main differences between prokaryotic cells and eukaryotic cells.

Prokaryotic cells are much smaller than eukaryotic cells.Prokaryotic cells have no nucleusDNA in prokaryotic cells are not associated with proteins whereas DNA in eukaryotic cells are assoicated with histone...
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Answered by Ka L. • Biology tutor
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Compare and contrast Barker and Sheriff’s presentation of the psychological effects of war within Regeneration and Journey’s End.

The psychological effects of war are amplified using alternative methods for escapism within Journey's End and Regeneration. Barker and Sherriff both take alternate routes to present how some men dealt with ...
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Explain the process that occurs from when the action potential reaches the pre-synaptic knob to transmission in the next neurone. (6 Marks)

Once an action potential reaches the synaptic cleft of a pre-synaptic neuron, voltage-gated calcium channels open. It is the depolarisation of the membrane that causes the opening. Calcium ions subsequently ...
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Answered by Basel E. • Biology tutor
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