Top answers

All subjects
A Level

Consider the transition metal complex [CoCl3(CO)3]. What is a) The oxidation state of the metal centre. b) The dn configuration of the metal centre. c) The co-ordination number of the metal centre.

a) +3. Cl ligands carry a negative charge while CO ligands are neutral so the all together the ligands have a charge of -3. Since the complex is neutral overall, the metal must cancel out the charge of t...

RS
Answered by Robert S. Chemistry tutor
9005 Views

f(x) = (x-5)/(x^2+5x+4), express this in partial fractions and hence find the integral of f(x) dx between x=0 and x=2, giving the answer as a single simplified logarithm.

f(x) = (x - 5) / (x + 4)(x + 1) let f(x) = A / (x + 4) + B / (x + 1) so (x - 5) / (x + 4)(x + 1) = A / (x + 4) + B / (x + 1) then multiplying by (x+4)(x+1), we get ...

TS
Answered by Toby S. Maths tutor
3921 Views

Evaluate the view that sociology can be studied as a science.

The founding fathers of sociology, who are commonly referred to as the early positivists Emile Durkheim (1858-1917) and Auguste Comte (1798-1857) believed that sociology could be studied scientifically an...

CC
Answered by Cheila C. Sociology tutor
2946 Views

How are polynucleotide DNA strands held together? (3 marks)

The two antiparallel strands of DNA are held together by hydrogen bonds joining the bases of each complementary nucleotide; Adenine is held to Thymine by 2 hydrogen bonds, and Guanine to Cytosine by 3 hyd...

SA
Answered by Srishti A. Biology tutor
10333 Views

How to effectively answer 'evaluation' essay questions? (example Q-"Evaluate Portman's use of instrumentation, melody and harmony in the music for 'The Duchess', in relation to the film's historical subject matter.) )

Before writing the essay It is essential to roughly plan your essay, which will provide effective framework to your ideas and analysis. Write down three other relevant musical work...

HM
Answered by Henrietta M. Music tutor
9766 Views

We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2026 by IXL Learning