Substance X is known to exist at 1 atm in the solid, liquid, or vapor phase, depending on the temperature. Additionally, the values of these other properties of X have been determined: melting point enthalpy of fusion - 10. °C boiling point 4.00 kJ/mol enthalpy of vaporization 30. °C 39.00 kJ/mol 3 1.60 g/cm³ (solid) 1 1 density 44. J.K ·mol (solid) 1.30 g/mL (liquid) 1 -1 heat capacity 64. J.K ·mol (liquid) 1 1 54. J.K mol (vapor) You may also assume X behaves as an ideal gas in the vapor phase. Suppose a small sample of X at -50 °C is put into an evacuated flask and heated at a constant rate until 10.0 kJ/mol of heat has been added to the sample. Graph the temperature of the sample that would be observed during this experiment. temperature (°C) 50- 40 30. 20 10. -10 -20 -30 -40 -50 0 1 2 3 4 5 6 7 8 9 10 heat added (kJ/mol) ☑ ? 00. 18 Ar

Calculate the heat energy released when 22.1 g of liquid mercury at 25.00 °C is converted to solid mercury at its melting point. Constants for mercury at 1 atm 28.0 heat capacity of Hg(1) melting point enthalpy of fusion J/(mol-K) 234.32 K 2.29 kJ/mol 4p= kJ

Substance X is known to exist at 1 atm in the solid, liquid, or vapor phase, depending on the temperature. Additionally, the values of these other properties of X have been determined: melting point 30. °C boiling point 90. °C enthalpy of vaporization enthalpy of fusion 8.00 kJ/mol 29.00 kJ/mol 1.70 g/cm (solid) 1.50 g/mL (liquid) density 35. J·K 1- •mol (solid) heat capacity 45. J'K (liquid) "mol 55. J·K •mol (vapor) You may also assume X behaves as an ideal gas in the vapor phase. Suppose a small sample of X at 0 °C is put into an evacuated flask and heated at a constant rate until 15.0 kJ/mol of heat has been added to the sample. Graph the temperature of the sample that would be observed during this experiment.

The enthalpy of vaporization of Substance X is 7.00 kJ/mol and its normal boiling point is −33.°C. Calculate the vapor pressure of X at −57.°C. Round to two sig figs. Answer in atm. .

1. Calculate the amount of heat (in kJ) released when converting 150.2 g of water to ice at -23 degrees Celsius.    2. A closed vessel of volume 10.0 L initially contains 1.303 g of water and no water vapor. Please calculate the mass of liquid water remaining once the system reaches equilibrium at 30 degrees Celsius. The vapor pressure of water at that temperature is equal to 0.0418 atm.   3. A person drinks four glasses of cold water (5 degrees C) every day. The volume of each glass is 195. mL. How much heat (in kJ) does the body have to supply to raise the temperature of the water to 37 degrees C (body temperature)?   4.From these data: N2H4(l) + O2(g) à 2N2(g) + 2H2O(l) H= -622.2 kJ/mol H2(g) + ½O2 à H2O(l) H= -285.8 kJ/mol H2(g) + O­2(g) à H2O2(l) H= -115 kJ/mol Find H for the reaction:                 N2H4(l) + 2H2O2(l) à 2N2(g) + 4H2O(l)   5. Consider the following chemical equation. CH4(g) + 2O2(g) à CO2(g) + 2H2O(l)                 Using the values in the table, calculate…

Which of the following properties does NOT impact the vapor pressure of a particular liquid in a closed container? Amount of hydrogen bonding in the liquid The surface tension of the liquid The temperature of the liquid The volume of liquid

Aluminum has a cubic closest packed structure as a solid. Assuming that aluminum has an atomic radius of 143 pm, calculate the density of solid aluminum. g/cm³

4.

Calculate the total heat required to raise the temperature of 550 mL of H2O from 278 K to 298 K, and then to vaporize half the sample. Assume the density of H2O is 1 gmL-1, the specific heat of H2O is 4.18 J g-1K-1, and the enthalpy of vaporization is 44.0 kJ/mol

Arrange the following substances in order of increasing enthalpy of vaporization. I 01 < | < III OI< | < | O< < 1 ○ III < 1< || ○ < |<1 "NH₂ G II III