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For the reaction (hydrochloric acid + magnesium -> magnesium chloride + hydrogen) what would happen to the rate of reaction if the solid magnesium was cut into smaller pieces? Explain the change (4)

By cutting the solid magnesium into smaller pieces you are increasing the surface area and also making a larger surface area to volume ration. Increasing the surface area increases the rate of reaction as th...
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Answered by Abigail R. • Chemistry tutor
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Calculate the enthalpy of combustion of 1 mol of ethanol using mean bond enthalpy (kJ/mol) data: C-C (347), C-H (413), C-O (358), O-H (464), O=O (498), C=O (805)

First we need to construct the equation of the combustion: C2H5OH(l) + 3O2(g) --> 2CO2(g) + 3H2O(l)Use aid of structural formulaLeft hand side (endothermic - requires energy):5(413) + 347 + 358 + 464 + 3(...
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Answered by Lewis L. • Chemistry tutor
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What type of compound is CH3COOH? Circle the correct answer. A) Alkene B) Carboxylic acid C) Alcohol D) Ketone

The correct answe gere is B) Carboxylic acidCH3COOH( ethanoic acid, or also cale acetic acid) is a carboxylic acid. This could be justified by the presence of -COOH(carboxylic functional group) in the struct...
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Answered by Stefan M. • Chemistry tutor
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How does paper chromatography work?

Paper chromatography is a technique used to separate coloured chemicals, such as a mixture of inks and dyes. A spot of the mixture to be analysed is spotted onto the bottom of a thin piece of chromatography ...
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Answered by Adam G. • Chemistry tutor
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What is the difference between intramolecular and intermolecular forces for covalently bonded molecules?

Intramolecular forces are the forces that hold atoms together or arrange atoms in specific position relative to other atoms within one molecular entity . For example, water, whose chemical notation is H 2 O,...
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Answered by Thomas H. • Chemistry tutor
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