Introduction to geochemistry UE Past Papers Questions.
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(1499) Question Category: Mathematical Calculation A large part of geochemistry deals with the distribution of elements in the Earth, which is the function of the planet`s differentiation history and chemical properties of the elements. Being able to predict how well elements will substitute into minerals is thus a key aspect of geochemistry.
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(1500) Question Category: Short answers Discuss the behavior of the REE during mantle melting. What properties of the rare earth elements (REE) make them useful in geochemistry(think in terms of the Goldschmidt parameters of size and charge) Answer / Solution UNSOLVED |
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(1501) Question Category: Short answers How do the REE behave during the mantle melting? are they compatible, incompatible or do they show mixed behaviors depending on the elements considered>. Do the REE fractionate from one another during mantle melting?. If so, in what way? Answer / Solution UNSOLVED |
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(1520) Question Category: Mathematical Calculation Calculate the solubility of Pyrite(FeS2) in pure water at 25ºC . Express the solubility as mole per litre, gram per litre and as parts per million. The solubility product constant for the reaction is 10-44.4 . Molecular weight of Fe=56, S=32. Answer / Solution UNSOLVED |
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(1521) Question Category: Short answers You are given the following chemical reaction: Balance it and state if the reaction is a function of Eh, pH or both. Will increasing pH have an effect on the reaction? If so how? Answer / Solution UNSOLVED |
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