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What is Cracking and why is it carried out?

Cracking is the process of breaking large Hydrocarbon molecules into smaller ones. This is carried out to refine fuels and increase the yeild in petrolium refining.
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Answered by Anna G. • Chemistry tutor
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When testing for primary, secondary, and teritary alcohols what is the testing reagent and the results of the test?

Testing reagent= Acidified solution of potassium dichromate (VI). The alcohol is added and the mixture is heated. For a primary alcohol- the mixture changes from orange (Cr2O72-) to green (Cr3+) and the prod...
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Answered by Anna G. • Chemistry tutor
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How can you tell what shape a molecule is going to be?

The key to determining the shapes of molecules is to think about number of lone and bonded pairs of elections and the interactions between these pairs. In doing this we apply the valence-shell election-pair ...
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Answered by Anna M. • Chemistry tutor
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To what extent does the Ara Pacis Augustae convey similar messages to those of the Prima Porta statue of Augustus?

Both can be viewed as propaganda devices of augustus portraying: Religious aspects - Augustus portrays himself both as a god-fearing man, but also with divine right. E.g: Prima porta shows bare-footedness wh...
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Describe the events which normally occur between the arrival of an action potential at the synaptic knob and its transmission across a neuromuscular junction.

Voltage gated calcium channels open in response to the action potential reaching the presynaptic knob. Calcium ions diffuse into the celll down their concentration gradient. This results in synaptic vesicels...
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Answered by Victoria S. • Biology tutor
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