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GCSE Chemistry- Describe the structure of an atom?

Atoms have a small nucleus surrounded by electrons. The Nucleus- It is in the middle of the atom It contains protons and electrons Protons are positively charged +1 Neutrons have no charge 0 Nucleus has a po...
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Answered by Umair I. • Chemistry tutor
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(See word doc for complete info) An experiment is carried out whereby the decomposition of hydrogen iodide is observed. Given the equilibrium compositions of each species, calculate the initial mass of hydrogen iodide.

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Answered by Anil L. • Chemistry tutor
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Can you outline John Stuart Mill's Theories on Utilitarianism?

John Stuart Mill - Background Connection to Bentham Utilitarianism Harm Principle Individual Sovereignty Higher and Lower Pleasures
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Explain how a blood clot can cause a heart attack?

A blood clot or thrombus is formed pathologically in the blood stream when the clotting cascade is activated inappropriately. This commonly occurs over the rough vessel surface during atherosclerosis of an a...
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Answered by Alex K. • Biology tutor
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How does the kidney filter out different molecules?

In the blood flowing through the kidneys, you find lots of different substances, like glucose and amino acids (which the body wants to keep and use) and urea (which the body wants to get rid of). The first i...
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Answered by Isobel E. • Biology tutor
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