ICSE 2007 : SCIENCE Paper 2 (Chemistry) - Question 1 (f) Numerical problem.

SCIENCE
Paper 2 (Chemistry) - 2007
(One hour and a half)

Question 1
(f) A sample of ammonium nitrate when heated yields 8.96 litres of steam (measured at stp).
NH₄NO₃ → N₂O + 2H₂O

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1.
(i) What volume of dinitrogen oxide is produced at the same time as 8.96 litres of steam?
(Type in ONLY the numerical value of the volume, assuming that its unit is litres.)

2.
(ii) What mass of ammonium nitrate should be heated to produce 8.96 litres of steam? (Relative molecular mass of ammonium nitrate is 80)
(Type in ONLY the numerical value of the mass, assuming that its unit is grams.)

3.
(iii) Determine the percentage of oxygen in ammonium nitrate (O = 16)
(Type in ONLY the numerical value of the percentage.)

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