write the balanced chemical equation for metal react with air
Answers
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6
Explanation:
When a metal reacts with oxygen, a metal oxide forms. The general equation for this reaction is: metal + oxygen → metal oxide.
Answered by
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Answer:
Calcium metal reacts with water-
(Calcium)
Ca
+
(Water)
2H
2
O
⟶Ca(OH)
2
+H
2
(ii) Cinnabar is heated in the presence of air-
(Cinnabar)
HgS
+
(Air)
3O
2
−2SO
2
2HgO⟶2Hg+O
2
(iii) Manganese dioxide is heated with aluminium powder-
(Mnganese dioxide)
3MnO
2
+
(Aluminium powder)
4Al
⟶3Mn+2Al
2
O
3
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