October 8, 2015

Homework Help: Chemistry

Posted by Ana on Sunday, August 29, 2010 at 8:06pm.

A solid white substance A is heated strongly in the absence of air. It decomposes to form a new white substance B and a gas C. The gas has exactly the same properties as the product obtained when carbon is burned in an excess of oxygen. Based on these observations, can we determine whether solids A and B and the gas C are elements or compounds? Explain your conclusions for each substance.

Solid A and gas C are compounds but I don't know why. B doesn't have enough information... ??

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