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At a certain temperature 5% w/ v solution of glucose (molar mass = 180 ) is isotonic with 8% w/v solution of an unknown solute.What is the molar mass of the unknown solute?

In an experiment 100 mL of hydrogen take 5 second and 100 mL of an unknown gas take 20 seconds to diffuse through a porous membrane. Determine the density of the unknown gas relative to that of hydrogen.

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Determine the height of a mountain if the elevation of its top at an unknown distance from base is 25^(@)10' and at a distance of 5km further off from the mountains,along the same line the angle of elevation is 15^(@)20' Give the answer in km correct to 2 decimals.

A sample of unknown gas is placed in a 2.5 L bulb at a pressure of 360 Torr and at a temperature of 22.5^(@) C and Is found to weight 1.6616 g. What is the molecular weight of the gas?

The resistance of the wire in the platinum resistance thermometer at ice point is 5Omega and at steam point is 5.25Omega . When the thermometer is inserted in an unknown hot bath its resistance is found to be 5.5Omega . The temperature of the hot bath is