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  4. Calculations for KS4 Chemistry - Worksheet (Answers) 1. Find the Ar (relative atomic mass for the following elements) a) K 39 b) F 19 c) Mg 24 d) O 16 e) H 1 f) N 14 g) Cl 35.5 h) Cu 63.5 i) S 32 2. Calculate the Mr for the following f) KF Mr = 39 + 19 = 58 g) MgO Mr = 24 + 16 = 40

  5. 2 Σεπ 2019 · place value operations. Practice Questions. Previous: Place Value Practice Questions

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