The density of mercury is 13.5 g/ml and the density of water is 1.00 g/ml. if a mercury barometer reads 805 mmhg, what is the barometric pressure in cmh2o hint: from physics we find that the pressure is related to the height according to the equation

Barometric pressure will be

Explanation:

We know,

where P is barometric pressure, h is height of liquid inside barometer, is density of liquid and g is gravitational constant

If barometric pressure is x cm for 805 mm Hg then-

So,

Hence barometric pressure will be

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