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a venturi tube is attached to an Entonox line. The manometer in the venturi tube is...

a venturi tube is attached to an Entonox line. The manometer in the venturi tube is filled with water and shows a pressure difference of 20 mmH2O. if the radii of the venturi tube are 1.0 and 0.10cm, what is the flow rate of the anesthetic gas? Assume the density of the Entonox is 1.9kg/m3

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