Identify the substance oxidized, the substance reduced, and, if any, spectator ions. 4Al(s) + 3O2 → 2Al203 (s)
Oxidation:
Reduction:
Spectator Ions:

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1 is the answer to this problem

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

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