A sample of C₃H₄Br₂ has a normal boiling temperature of 131.5 °C. The enthalpy of vaporization for this compound is 35.4 kJ/mol. How much energy would be required to heat a 76.3 gram sample of liquid C₃H₄Br₂ from 97.5 °C to a gas at 187.2 °C? The specific heat for the liquid is 0.865 J/g･°C and the specific heat for the gas is 0.364 J/g･°C.

What quantity of heat is required to convert 19.0 g of ethanol (C₂H₅OH) at 23.0°C to a vapor at 78.3°C (its boiling point)? (heat capacity of ethanol = 2.46 J/g • C; ∆Hvap = 39.3 kJ/mol)

The following information is given for cobalt at 1atm: boiling point = 3097°C AHvap = 6.60 kJ/g melting point = 1495°C AHfus = 263 J/g What is the energy change, Q, in kJ for the process of freezing a 39.8 g sample of liquid cobalt at its normal melting point of 1495°C. kJ

Carbon tetrachloride (CCl4) boils at 77∘C. The measured enthalpy of vaporization is 29.8 kJ/mol What is the heat of vaporization?

Consider the following data for ethanol, C2H5OH: Melting Point = -114°C Boiling Point = 78°C ΔHfusion = 5.0 kJ/mol ΔHvaporization = 42.6 kJ/mol Specific Heat of Liquid Ethanol = 2.5 J/g•°C Sketch a cooling curve that depicts ethanol vapor at 78°C being cooled until solid ethanol is formed at -114°C and then calculate the total amount of heat in kilojoules released when 55 grams of ethanol undergoes this process.

How much heat energy is required to convert 77.6 g of solid iron at 21 °C to liquid iron at 1538 °C? The molar heat of fusion of iron is 13.8 kJ/mol. Iron has a normal melting point of 1538 °C. The specific heat capacity of solid iron is 0.449 J/(g · °C). q= kJ

Calculate the amount of heat (in kJ) required to raise the temperature of a 86.0 g sample of ethanol from 198.0 K to 300.0 K. The specific heat capacity of ethanol is 2.42 J/g°C. 60.0 kJ 21.2 kJ 11.9 kJ 75.6 kJ 28.4 kJ

A sample of C3H4Br2 has a normal boiling temperature of 131.5 °C. The enthalpy of vaporization for this compound is 35.4 kJ/mol. How much energy would be required to heat a 13.5 gram sample of liquid C3H4Br2 from 97.5 °C to a gas at 187.2 °C? The specific heat for the liquid is 0.865 J/g °C and the specific heat for the gas is 0.364 J/g. °C.