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Hydrogen chloride (HCl) has a melting point of -114.2 °C. Sodium chloride (NaCl) has a melting point of 801 °C. Explain in terms of structure and bonding why these substances have such different melting points?

Hydrogen chloride has a simple molecular structure. The atoms within the molecule are held together by strong covalent bonds. However, for simple covalent molecules to melt only the weak intermolecular force...
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How should I approach a source based question?

When answering source based questions it is incredibly important to devote at least 10-15 minutes on analysing the source itself, this will help you plan and structure your answer more effectively. You shoul...
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Answered by Miriam B. • History tutor
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How does Shakespeare make use of comic conventions in Twelfth Night?

Comic conventions are utilised in a number of ways typical of Shakespearean comedies in Twelfth Night. The most obvious traditional Shakespearean conventions all appear in Twelfth Night, these include marria...
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Answered by Miriam B. • English tutor
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"La Haine est sans doute un film pessimiste et anti-autoritaire".  Dans quelle mesure êtes-vous d'accord avec ce jugement?

Le film 'La Haine' est un film qui donne une vision pessimiste de la période de la société française qu'il montre, avec des éléments anti-autoritaires. Premièrement, l'image que Kassovitz donne de la police,...
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Answered by Miriam B. • French tutor
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Explain how neurotransmitters are transmitted across the synapse?

The action potential travels down the presynaptic neuron, depolarising the membraneCauses voltage-gated calcium channels to openCalcium ions cause the neurotransmitter to fuse with the membraneThe neurotrans...
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Answered by Hasan I. • Biology tutor
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