Tuesday
July 29, 2014

Homework Help: chemistry

Posted by Anonymous on Friday, April 26, 2013 at 10:53am.

Glass A has a composition of 90% SiO2 - 10% Na2O. Glass B has a composition of 99% SiO2 - 1% Na2O. Both glasses are cooled to room temperature at the same rate.

(a) Which glass has the higher Tg?


Glass A
Glass B
(b) Which glass has the lower free volume?

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