Ocs as level chemistry a 2023 version 2 depth in chemistry graded a guaranteed pass

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2 © OCR 2023 ........................................................................................................................................... .............................................. ................................................................................................ ........................................................................................................................................... . .................................................................................................................................. [2] (ii) A sample of strontium has a relative atomic mass of 87.73. The sample consists of: • 82.9% Sr-88 • 6.9% Sr-87 • one other isotope. Determine the other isotope of strontium in the sample. isotope of strontium =........................................................... [2] Answer all the questions. 1 This question is about the properties and reactions of the Group 2 element strontium. (a) The relative atomic mass of strontium can be determined using a mass spectrometer. (i) Explain what is meant by the term relative atomic mass of an element [Show More]

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