The heat of vaporization for 1.0 mole of a substance X at 45.99°C is 50.6 kJ. Calculate ASsurr for the process X(1) → X(g) at 45.99.°C. Report your answer with the correct number of the significant figures. Do not include the unit here but show it in your uploaded work.

C₂H1002 A chemist carefully measures the amount of heat needed to raise the temperature of a 291.0 mg sample of CoH10O2 from 54.8 °C to 65.7 °C. The experiment shows that 5.41 J of heat are needed. What can the chemist report for the molar heat capacity of CoH10O2? Be sure your answer has the correct number of significant digits. -1 ₁ J-mol K x10

A 46.0 g sample of iron, which has a specific heat capacity of 0.449 J∙g¯¹.°C¯ is dropped into an insulated container containing 300.0 g of water at 95.0 °C and a constant pressure of 1 atm. The initial temperature of the iron is 9.1 °C. Assuming no heat is absorbed from or by the container, or the surroundings, calculate the equilibrium temperature of the water. Be sure your answer has 3 significant digits. °C 0x12 X

Chlorofluorocarbons are commonly used as Freon in refrigerators and air conditioners. Cooling the average dorm room from 35°C to 22°C requires the air conditioner to convert ~2700 g of C2Cl3F3 from a liquid at 24.7 °C to a gas at 87.0 °C.  How much energy in kJ is absorbed by the chlorofluorocarbon when cooling this room?  The chlorofluorocarbon C2Cl3F3 has a normal boiling point of 47.6 °C. The specific heat of the liquid is 0.91 J/g⋅K.  The specific heat of the gas is  0.67 J/g⋅K.  The heat of vaporization is 27.49 kJ/mol.