ICSE 1996 : SCIENCE Paper 2 (Chemistry) - Question 1(e) Answer the following.

SCIENCE
Paper 2 (Chemistry) - 1996
(One hour and a half)

Question 1
(e) (i) Under the same conditions of temperature and pressure you collect 2 litres of carbon dioxide, 3 litres of chlorine, 5 litres of hydrogen, 4 litres of nitrogen and 1 litre of sulphur dioxide. In which gas sample will there be:

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18.
1. The greatest number of molecules.

19.
2. The least number of molecules? Just your answer.

20.
(ii) The pressure on one mole of gas at S.T.P. is doubled and the temperature is raised to 546 K. What is the final volume of the gas?

21.
(iii) Find the total percentage of oxygen in magnesium nitrate crystals: Mg(NO₃)₂.6H₂O.
(H = 1 , N = 14 , O = 16 , Mg = 24)

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