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What is the definition of Avogadro's constant and when should I use it?

Avogadro's constant is defined as the number of atoms/molecules in one mole of a substance . It's value is approximately 6.023 x 10^23. It is often used in conjunction with the equation "moles = mass (i...
BK
Answered by Ben K. • Chemistry tutor
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Explain what is meant by the term 'rate of reaction'?

The change in concentration of reactants or products, per unit of time.
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Answered by Laura M. • Chemistry tutor
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Describe how ethanol can be produced from ethene

Ethanol can be produced by hydrating ethene, through reacting it with steam under the influence of a catalyst e.g. phosphoric acid.
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Answered by Amy A. • Chemistry tutor
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What is solvent leveling? How can we distinguish between two strongly acidic solutions? (This is a challenging question and is included for interest only)

Solvent levelling refers to the effect of the solvent on the properties of acids and bases. The apparent acidity of a solution is limited, or levelled, by the basicity of the solvent it is in. A very strong ...
JC
Answered by James C. • Chemistry tutor
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Briefly discuss Le Chatelier's Principle. Ammonia is made in the Haber Process (3H2(g) + N2(g)<-> 2NH3(g)). Using Le Chetelier's Principal, what happens to the equilibrium yield of ammonia when...: A) Temp increases, B) Press increases C) Catalyst changes

Le Chetelier's Principal gives us a guide to work out what will happen when we change the conditons of a reaction in dynamic equilibrium. It states that if the dynamic equilibiurm is disturbed, the equilibri...
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Answered by James C. • Chemistry tutor
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