A block of ice at a temperature of -15 °C consisting of 18 gr (1 mol) of water is dropped in the sea where the temperature of the sea water is constant and equal to 25oC. THE ice melts and the water that forms eventually takes the temperature of the sea. a) Calculate the entropy change of 18 gr H2O that were initially in form of ice. Data: In the temperature range between -15 °C and 0 °C the p c of ice is 37 J mol-1 K-1. In the temperature range between 0°C and 25°C the p c of water is 75.3 J mol-1 K-1. The enthalpy (heat) of melting of ice is 6008 J mol-1. (Hint: Consider the chunk of ice as System and the sea as Environment. Everything process steps take place under constant pressure)

A block of ice at a temperature of -15 °C consisting of 18 gr (1 mol) of water is dropped in the sea where the temperature of the sea water is constant and equal to 25oC. THE ice melts and the water that forms eventually takes the temperature of the sea. a) Calculate the entropy change of 18 gr H2O that were initially in form of ice. Data: In the temperature range between -15 °C and 0 °C the p c of ice is 37 J mol-1 K-1. In the temperature range between 0°C and 25°C the p c of water is 75.3 J mol-1 K-1. The enthalpy (heat) of melting of ice is 6008 J mol-1. (Hint: Consider the chunk of ice as System and the sea as Environment. Everything process steps take place under constant pressure)