ICSE Class 10 Chemistry 2020 Solved Paper
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Calculate the percentage of :
in sodium aluminium fluoride[ Na 3 AlF 6 ]
[Atomic Mass :N a = 23 , A l = 27 , F = 19
in sodium aluminium fluoride
[Atomic Mass :
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Question : 66
Total: 86
Fluorine
Solution:
Molecular Mass of Na 3 AlF 6
= 23 × 3 + 27 + 19 × 6 = 210
Percentage of fluorine
=
× 100 = 54.28 ≃ 54 %
Percentage of fluorine
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