Asked by Ceci

During heating a 5 g solid gives off oxygen gas. The mass of the residue after heating is 3.5 g. What is the mass of the oxygeb ? What percent of the compoiund is oxygen?
Answered by DrBob222
A ==> C
A start is 5.0 g
A finish is 3.5
mass oxygen must be 5.0-3.5 = ??
%oxygen = (mass oxygen/mass compound)*100 =??
Answered by Awny
1.5g
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