Magnesium can be used as a “getter” in evacuated enclosuresto react with the last traces of oxygen. (The magnesium isusually heated by passing an electric current through a wireor ribbon of the metal.) If an enclosure of 0.452 L has a partialpressure of O2 of 3.5 * 10-6 torr at 27 °C, what mass of magnesiumwill react according to the following equation?2 Mg1s2 + O21g2¡2 MgO1s2

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Chapter1: Chemical Foundations
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Magnesium can be used as a “getter” in evacuated enclosures
to react with the last traces of oxygen. (The magnesium is
usually heated by passing an electric current through a wire
or ribbon of the metal.) If an enclosure of 0.452 L has a partial
pressure of O2 of 3.5 * 10-6 torr at 27 °C, what mass of magnesium
will react according to the following equation?
2 Mg1s2 + O21g2¡2 MgO1s2

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