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A white solid suspected to be lead trioxonitrate (V) zinc trioxocarbonate (IV) or ...

A white solid suspected to be lead trioxonitrate (V) zinc trioxocarbonate (IV) or calcium trioxocabonate (IV) was heated strongly. Its residue which was yellow when hot and white when cold is?

A. lead (II) oxide
B. calcium oxide
C. zinc oxide
D. lead nitrate




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