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Excess KCN(aq) is added to a solution of [Co(H2O)6]2+. Identify the complex ion formed and predict its shape and charge.

[Co(CN)6]4-CN has -1 charge so overall charge is -4. CN- is similar sized ligand to H2O so shape is unchanged and remains octahedral.
JJ
Answered by Jack J. • Chemistry tutor
4466 Views

Why did Hitler become Chancellor of Germany in January 1933?

This is a very typical question for history A-level exams and I would suggest that a student approached it in four factors. The factors that I propose caused Hitler to become chancellor are 1) The failure of...
HA
Answered by Holly A. • History tutor
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The curve C has the equation y=((x^2+4)(x-3))/2*x where x is not equal to 0 . Find the tangent to the curve C at the point where x=-1 in the form y=mx+c

Firstly we need to expand out y into a series of terms to make it easier for us to compute the derivative . You multiply out the brackets to get y=(x 3 -3x 2 +4x-12)/2x then we divide each of the terms of th...
EM
Answered by Ellie M. • Maths tutor
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How can I remember all of the content in A-Level biology?

A-Level Biology has probably the most content of any of the A-Level sciences! Its tempting to memorise all the content in the textbook but in reality some textbooks will have extra information that is not ac...
JV
Answered by Joseph V. • Biology tutor
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Compare and contrast the themes of love and fantasy within "The Great Gatsby" and "The Whitsun Weddings".

Throughout both "The Whitsun Weddings" collection and the novel “The Great Gatsby” the themes of love and fantasy are frequently explored and shown by both poet and author to be somewhat interchang...
OW
Answered by Olivia W. • English tutor
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