What kind of electrons
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12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

How many moles of oxygen react with 12 moles of aluminum

Ariver current has a velocity of 5km/h relative to the shore, and a boat moves in the same direction as the current at 5 km/h relative to the river. how can the velocity of the boat relative to the shore be calculated?