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Why is the melting temperature of Magnesium higher than that of Sodium?

More energy is required to break the metallic bonds in Magnesium, because: -Magnesium ions have a smaller ionic radius than Sodium ions so Magnesium is more closely packed -Mg2+ ions have a greater charge de...
EM
Answered by Evelyn M. Chemistry tutor
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"Railroads were the key reason for US economic growth 1865-1890" Assess the validity of this view.

There are many ways to answer this question, but I will illustrate one way of doing it, then explain how to apply this method to answer it differently. To gain marks, it's normally easier to disagree with th...
BJ
Answered by Balraj J. History tutor
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Discuss the key themes presented in W.H. Auden’s poem ‘Musee des Beaux Arts’

Musee des Beaux Arts employs a form of ekphrasis in order to illuminate and critique the policy of appeasement adopted by Britain and France in the late 1930s. Auden describes Pieter Brueghel the Elder’s pai...
JB
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Describe the basic structure of a cell membrane?

Made of structrues called phospholipids with a polar, hydrophobic head region and a non-polar hydrophillic region. Formation of a bilayer. Contains cholesterol which binds to the fatty acid tails to add sten...
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Answered by Kaylan P. Biology tutor
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Why are Amines more basic than Amides?

The lone pair of electrons on the amine are more available to accept a proton and act as a base. This is because in amides, the carbonyl (C=O) group is highly electronegative, so has a greater power to draw ...
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Answered by Kaylan P. Chemistry tutor
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