Select the compound that will have the higher equilibrium vapor pressure based on predicted intermolecular forces. pentane (C5H12) iodine pentafluoride

Please answer both questions. 32. How much heat (in kJ) is absorbed in the process of making 0.813 mol of CF₄ from the following reaction? C (s) + 2 F₂ (g) → CF₄ (g) ∆H° = 141.3 kJ/mol 47. Given that water has a specific heat capacity of 4.184 J/g°C, calculate the amount of heat (J) to raise the temperature of 250.0 g (about one glass) of water 34.00°C.

The following information is given for ethanol at 1 atm: Boiling point = 78.40°C   Heat of vaporization = 200.0 cal/g Melting point = –114.5°C   Heat of fusion = 26.04 cal/g Specific heat gas = 0.3418 cal/g°C Specific heat liquid = 0.5880 cal/g°C A 22.80 g sample of liquid ethanol is initially at –68.20°C. How many kcal of energy must be added to the sample to raise its temperature to 94.20°C? Energy added = kcal

Aspirin has a higher molar mass compared to salicylic acid, however aspirin melts at a lower temperature than salicylic acid. Provide a brief explanation for this observation. Table 1 Compound: Formula: Salicylic Acid C;H6O3 Aspirin C9H3O4 Molar Mass: 138.12 Melting point: Ka 158-160°C 1.08 x 10³ 180.15 140-142°C 2.72 x 10$ pKa Solubility (g/100ML) 2.99 4.57 0.18 0.25

The enthalpy for boiling water is 40.7 kJ/mol. How much heat is required to boil 820.1 g of water?

What is a phase change? Construct a heating-cooling curve for a substance that freezes at –23.0°C and has a boiling point of 67.0°C. Name all possible changes that can occur among the vapor, liquid, and solid phases of this substance, and name the four phase change enthalpies involved. Indicate whether these changes are exothermic or endothermic

For each set of molecules, determine which one has the higher boiling point, and explain why

The enthalpy for boiling water is 40.7 kJ/mol. What is the quantity of heat (in kJ) required to boil 418.1 g of water?

How much heat in kilocalories is absorbed when 22.0 g of 2-propanol evaporates after being rubbed on the skin? The heat of vaporization of 2-propanol is 159 cal/g.