Write the balanced chemical equations for the following:
1) Aluminum reacts with phosphoric acid to yield hydrogen gas and aluminum phosphate.
2) Aluminum reacts with oxygen to form aluminum oxide.
3) Dinitrogen pentoxide reacts with water to produce nitric acid.
4) Sodium bicarbonate produces sodium carbonate, water and carbon dioxide.
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Answer:
1. 2Al + 2H3PO4 - 3H2 + 2AlPO4
2. 2Al + O - Al2O
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