A sample of oxygen with a pressure of 400 mmHg contains 2.0 mol of gas and has a value of 4.0L. What will the new pressure be when the volume expands to 5.0L and 3.0 mol of helium gas is added while the temperature is constant?A. 160 mm HgB. 250 mm HgC. 800 mm HgD. 1000 mm HgE. 1560 mm Hg; A sample of oxygen with a pressure of 400 mmHg contains 2.0 mol of gas and has a value of 4.0L. What will the new pressure be when the volume expands to 5.0L and 3.0 mol of helium gas is added while the temperature is constant?A. 160 mm HgB. 250 mm HgC. 800 mm HgD. 1000 mm HgE. 1560 mm Hg
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