An analysis of a pyrex glass showed 12.9% B2O3, 2.2% Al2O3, 3.8% Na2O, 0.4% K2O and remaining is SiO2. What is the ratio of Si to B atoms in the glass?
11 : 3
SiO2 present in 100 g glass
= 100 – (12.9 + 2.2 + 3.8 +0.4) = 80.7 g
= 1.345 mole of SiO2
= 1.345 mol of Si atoms
B2O3present in 100 g glass =12.9 g
= 0.184 mole of B2O3
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