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24.3cm^3 of 0.02moldm-3 KMnO4 reacted with 20cm^3 of iron (II) solution. Calculate the molarity of the iron (II) solution.

Firstly calcuate the moles of KMnO4 by using the equation n=MV/1000 where n=moles M=molarity (moldm -3 ) and V= volume (cm 3 ). As the question gives the molarity and volume of KMnO4 you simply plug the valu...
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Answered by Anya B. • Chemistry tutor
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A bacterial infection that cannot be treated with one sort of penicillin can be treated with a different sort. Use your knowledge of enzyme action to explain why the different sort of penicillin is effective in treating the infection.

Penicillin inhibits an enzyme that forms cross links in bacterial cell walls halting bacterial reproduction. Different penicillins have different shapes or structures. The penicillin that is not effective in...
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Answered by Georgia D. • Biology tutor
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Given a graph with n nodes and m edges, every edge has a passing cost that can be negative, find the minimum distance between node 1 and every other node

We will use the Bellman-Ford algorithm to compute the minimum distance between that start node and every other one, by passing through each edge for a maximum of n times and "relaxing the edge", wh...
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Answered by Victor S. • Computing tutor
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Outline Asch’s findings in relation to two variables affecting conformity. Briefly explain two limitations of Asch’s conformity research. [8 marks]

Read over what the question is asking you carefully and look at a number of marks the question is worth. This question is worth 8 marks. You can get 4 marks from the first part of the question ‘Outline Asch’...
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Answered by Scott M. • Psychology tutor
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How do you conjugate the 'passé composé' ?

The passé composé goes hand in hand with the présent de l'indicatif . It is formed by putting an auxiliary verb , être or avoir and a past participle together. The passé composé is used to describe an action...
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Answered by Camille B. • French tutor
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