The molar volume of a certain solid is 140.8 cm3 mol-1 at 1.00 atm and 427.45 K its melting temperature. The molar volume of the liquid at this temperature and pressure is 156.2 cm3 mol-1 at the same temperature and pressure. At 3.3 MPa the melting temperature changes to 429.81 K. Find the enthalpy of fusion of the solid in kJ mol-1.

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt