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 If an enciosure of 0.442 L has a partial pressure of O2 of 3.5106 torr at 27C, what mass of electric current through a wire or ribbon of the magnesium will roact according to the following equation? metal.) 2Mg(s)+O2(g)2MgO(s) Express your answer using two significant figures