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Write a balanced equation for the oxidation of Iron from the 2+ oxidation state to the 3+ oxidation state using the manganate ion.

Firstly, we need to write a balanced equation for the oxidation of Fe 2+ to Fe 3+ . We know that when something is oxidised, it is losing electrons, making the half equation: Fe 2+ ---> Fe 3+ + e - (we ca...
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Answered by Paige M. • Chemistry tutor
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How does natural selection occur?

There are two important terms to understand (and state in an exam!) to answer this question. 1) Genetic diversity = the number of different alleles of genes in a population . Genetic diversity is a main fact...
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Answered by Tess W. • Biology tutor
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Why do insects and other animals need developed transport systems?

They have a high metabolic rate As a result, they have a high oxygen and glucose demand Diffusion is not efficient alone as it is too far
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Answered by Freya B. • Biology tutor
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(AS Art and Architecture) - What is the significance of the Kritios Boy as a transition piece between Kouroi and Bronze Sculpting.

The Kritios Boy is important as it represented all the fundamental flaws presented with the 'Kouros type' sculpture. For example, the Kritios Boy is attempting to breach realism and does this through a sligh...
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Describe the sequence of events of the clotting cascade that will lead to a blood clot in a damaged blood vessel

Thromboplastin is released from damaged tissue and platelets, which activates an enzyme that catalyses the conversation of the protein prothrombin to thrombin. This occurs in the presence of Calcium and Vita...
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Answered by Laura T. • Biology tutor
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