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The Aldehyde CH3CH2CHO (A) reacts with HCN to give a racemic mixture, name the compound CH3CH2CH(CN)OH (B) formed and explain why we get a racemic mixture and how we could differentiate between two different enantiomerically pure solutions of B

B = R/S 2-hydroxybutanenitrile we get a racemic mixture because the carbon in the aldehyde where the nucleophile attacks has a trigonal planar geometry and so there is an equal chance of attack by the nucleo...
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Answered by Jake V. • Chemistry tutor
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Evaluate the impact of the introduction of a sugar tax on fizzy drinks in the UK.

This question tests the knowledge of students on indirect taxes, demerit goods, negative externalities and market failure. It is an example of a longer answer question, where students would be expected to co...
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Answered by Honor S. • Economics tutor
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Explain how to use the passé composé.

The passé composé is used for actions which have been completed in the past.It is formed of an auxiliary verb, either avoir or être conjugated depending on the subject, and the past participle of the verb. M...
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Answered by Ellen B. • French tutor
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Why is the redshift important?

The redshift is an important piece of evidence for the big bang theory. If we look at the visible region on the electromagnetic wave spectrum, we will see there is red light on the left and there is violet o...
LC
Answered by Laxshana C. • Physics tutor
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Describe how collision theory explains an increase in the rate of a reaction at higher temperatures.

When temp increases, kinetic energy of molecules increases. Higher kinetic energy means molecules move around more and increased movement leads to more collisions. Collision theory states that the rate of re...
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Answered by Charlie M. • Chemistry tutor
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