AQA Jun 2011 Paper 1 Q1

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section a answer all questions in the spaces provided do not write outside the box mass spectrometry can be used to identify isotopes of elements a i in terms of fundamental particles state the difference between isotopes of an element mark a ii state why isotopes of an element have the same chemical properties mark b give the meaning of the term relative atomic mass marks extra space wmp jun chem do not write outside the box c the mass spectrum of element x has four peaks the table below gives the relative abundance of each isotope in a sample of element x m z relative abundance c i calculate the relative atomic mass of element x give your answer to one decimal place marks c ii use the periodic table to identify the species responsible for the peak at m z marks d suggest one reason why particles with the same mass and velocity can be deflected by different amounts in the same magnetic field mark e explain how the detector in a mass spectrometer enables the abundance of an isotope to be measured marks extra space turn over wmp jun chem do not write outside the box norgessaltpeter was the first nitrogen fertiliser to be manufactured in norway it has the formula ca no a norgessaltpeter can be made by the reaction of calcium carbonate with dilute nitric acid as shown by the following equation caco s hno aq ca no aq co g h o i in an experiment an excess of powdered calcium carbonate was added to cm of mol dm nitric acid a i calculate the amount in moles of hno in cm of mol dm nitric acid give your answer to significant figures mark a ii calculate the amount in moles of caco that reacted with the nitric acid give your answer to significant figures mark a iii calculate the minimum mass of powdered caco that should be added to react with all of the nitric acid give your answer to significant figures marks a iv state the type of reaction that occurs when calcium carbonate reacts with nitric acid mark wmp jun chem

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