Edexcel Jun 2017 (IAL) Paper 1 Q4

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4 What is the empirical formula of the oxide formed when 2.6 g of chromium produces 3.8 g of chromium oxide? Molar masses / g mol1 Cr = 52.0, O = 16.0 A CrO B CrO2 C Cr2O3 D Cr3O4 (Total for Question 4 = 1 mark) 5 Consider the reaction What is the maximum volume, in dm3, of sulfur trioxide that could be obtained when 0.5 dm3 of sulfur dioxide is mixed with 1 dm3 of oxygen, under suitable conditions? 2SO2(g) + O2(g) (cid:111) 2SO3(g) All measurements are made at the same temperature and pressure. A 0.5 B 1.5 C 2.0 D 2.5 Identify the atom with two unpaired electrons in its lowest energy state (ground state). (Total for Question 5 = 1 mark) A Be B C C Cl D Ca Use this space for any rough working. Anything you write in this space will gain no credit. (Total for Question 6 = 1 mark) A E R A S I H T N I E T I R W T O N O D A E R A S I H T N I E T I R W T O N O D A E R A S I H T N I E T I R W T O N O D *P48382A0324* Turn over<br />

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