what is the total gas pressure, in millimeters of mercury

A 2.25-L container of H2(g) at 756mm Hg and 24∘C is connected to a 3.20-L container of He(g) at 738mm Hg and 24∘C.After mixing, what is the total gas pressure, in millimeters of mercury, with the temperature remaining at 24∘C?P total = _________ mm HgAnswer Attached Questions too..

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