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(5) Estimate the change in the Gibbs energy of 50 cm³ of water when the pressure acting on it is increased from 100 kPa to 250 kPa. Given that the mass density of water is 0.997 g/cm³, determine the change in the molar Gibbs energy. (6) Suppose the incident sunlight at the ground level has a power density of 0.8 kW/m² at noon. What is the maximum rate of loss of water from a lake of area 1.0 ha? (1 ha=10?m².) Assume 90 % of the radiant energy is absorbed. (7) The vapour pressure of a liquid fits the expression log(p/Torr)=9-(1700K)/T. Calculate (i) the enthalpy of vaporization and (ii) the normal boiling point of the liquid. (8) The volume of an aqueous solution of NaCl at 25 °C was measured at a series of molalities b, and it was found to fit the expression v=1000+17x+ 2x³/²+0.1x² where v= V/cm³, V is the volume of a solution formed from 1 kg of water, and x=b/b?. Calculate the partial molar volume of the components in a solution of molality 0.1 mol/kg.

          (5) Estimate the change in the Gibbs energy of 50 cm³ of water when the pressure acting on it is increased from 100 kPa to 250 kPa. Given that the mass density of water is 0.997 g/cm³, determine the change in the molar Gibbs energy.

(6) Suppose the incident sunlight at the ground level has a power density of 0.8 kW/m² at noon. What is the maximum rate of loss of water from a lake of area 1.0 ha? (1 ha=10?m².) Assume 90 % of the radiant energy is absorbed.

(7) The vapour pressure of a liquid fits the expression log(p/Torr)=9-(1700K)/T. Calculate (i) the enthalpy of vaporization and (ii) the normal boiling point of the liquid.

(8) The volume of an aqueous solution of NaCl at 25 °C was measured at a series of molalities b, and it was found to fit the expression v=1000+17x+ 2x³/²+0.1x² where v= V/cm³, V is the volume of a solution formed from 1 kg of water, and x=b/b?. Calculate the partial molar volume of the components in a solution of molality 0.1 mol/kg.

(5) Estimate the change in the Gibbs energy of 50 cm³ of water when the pressure acting on it is increased from 100 kPa to 250 kPa. Given that the mass density of water is 0.997 g/cm³, determine the change in the molar Gibbs energy.

(6) Suppose the incident sunlight at the ground level has a power density of 0.8 kW/m² at noon. What is the maximum rate of loss of water from a lake of area 1.0 ha? (1 ha=10?m².) Assume 90 % of the radiant energy is absorbed.

(7) The vapour pressure of a liquid fits the expression log(p/Torr)=9-(1700K)/T. Calculate (i) the enthalpy of vaporization and (ii) the normal boiling point of the liquid.

(8) The volume of an aqueous solution of NaCl at 25 °C was measured at a series of molalities b, and it was found to fit the expression v=1000+17x+ 2x³/²+0.1x² where v= V/cm³, V is the volume of a solution formed from 1 kg of water, and x=b/b?. Calculate the partial molar volume of the components in a solution of molality 0.1 mol/kg.

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