ICSE 1997 : SCIENCE Paper 2 (Chemistry) - Question 4 Answer the following.

SCIENCE
Paper 2 (Chemistry) - 1997
(One hour and a half)

Question 4

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1.
(a) Calculate the empirical formula of the compound having 37.6% sodium, 23.1% silicon and 39.3% oxygen. (Work to two decimal places) [O = 16; Na = 23; Si = 28]

2.
(b) The empirical formula of a compound is C₂H₅. It has a vapour density of 29. Determine the relative molecular mass of the compound and hence its molecular formula.

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