copper is heated in air
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Heated copper metal reacts with oxygen to form the black copper oxide. The copper oxide can then react with the hydrogen gas to form the copper metal and water. When the funnel is removed from the hydrogen stream, the copper was still be warm enough to be oxidized by the air again.
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Heated copper metal reacts with oxygen to form the black copperoxide. The copper oxide can then react with the hydrogen gas to form the copper metal and water. When the funnel is removed from the hydrogen stream, the copperwas still be warm enough to be oxidized by the air again.
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2cu (s) + O2 (g) = 2 CuO (s)
CuO (s) +H2 (g) = Cu (s) + H2O (g)
CuO (s) +H2 (g) = Cu (s) + H2O (g)
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bhaia 1st question's answer is PCL5+
PCL5+4H2OH3PO4+5HCL
2nd question answer is 2 SO2(g) + O2 (g)--^2 SO3.
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