Homework Answers
The Melting point at P= 1.000*
10^6 Pa is 183.407k.
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Time: 15 minutes When a certain compound melts at P = Pº = standard pressure (1.000...
3. The heat of vaporization of a compound is 512 kJ/mol. When 1.28 mol of this...
3. The heat of vaporization of a compound is 512 kJ/mol. When 1.28 mol of this compound vaporize at standard pressure, the entropy increases from 1243 J/K to 1751 J/K. What is the melting point of this compound at standard pressure to three significant figures? A) 1290 K B) 1010 K C) 787 K D) 292 K E) 412 K
The pressure P and volume V of a certain amount of steam in an adiabatic process...
The pressure P and volume V of a certain amount of steam in an adiabatic process (a process in which the heat in the system does not change due to proper insulation) fairly follows the equation PVY K where y and K are constants. In an adiabatic experiment, the volume of a certain amount of steam confined in a tank is gradually increased, resulting in a decrease in gas pressure. Using the above equation and linear regression, find the values...
Consider the data in the table. Compound Melting point (°C) Δ H fus (kJ/mol) Boiling point...
Consider the data in the table. Compound Melting point (°C) Δ H fus (kJ/mol) Boiling point (°C) Δ H vap (kJ/mol) HF −83.11 4.577 19.54 25.18 HCl −114.3 1.991 −84.9 17.53 HBr −86.96 2.406 −67.0 19.27 HI −50.91 2.871 −35.38 21.16 Using the data in the table, calculate Δ S fus and Δ S vap for HBr . Δ S fus = J / ( K ⋅ mol) Δ S v a p = J / ( K ⋅ mol)...
The vapor pressure, P,P, of a certain liquid was measured at two temperatures, T.T. The data...
The vapor pressure, P,P, of a certain liquid was measured at two temperatures, T.T. The data is shown in the table. T (K) P (kPa) 275 3.12 525 7.93 Keep the pressure units in kilopascals. If you were going to graphically determine the enthalpy of vaporizaton, ΔHvap,ΔHvap, for this liquid, what points would you plot? To avoid rounding errors, use three significant figures in the x‑values and four significant figures in the y‑values. point 1: x= point 1: y= point...
The vapor pressure, P,P, of a certain liquid was measured at two temperatures, T.T. The data...
The vapor pressure, P,P, of a certain liquid was measured at two temperatures, T.T. The data is shown in the table. T (K) P (kPa) 325 3.46 525 8.42 Keep the pressure units in kilopascals. If you were going to graphically determine the enthalpy of vaporizaton, ΔHvap,ΔHvap, for this liquid, what points would you plot? To avoid rounding errors, use three significant figures in the xx‑values and four significant figures in the yy‑values. point 1: x= y= point 2: x=...
02) Consider a hydrostatic system represented by the thermodynamic variables volume V, pressure P and temperature...
02) Consider a hydrostatic system represented by the thermodynamic variables volume V, pressure P and temperature T. a) Consider entropy S = S(T, V) and derive the equation TdS. Tas = Cvat +T (1) dV. V Show that this equation can be written as follows BT TdS = CydT + PDV where Cv is the thermal capacity at constant volume, B is the isobaric expansiveness and K is isothermal compressibility: b) Consider a gas described by the equation of state...
The ideal gas law states that PV = NkgT where P is the absolute pressure of...
The ideal gas law states that PV = NkgT where P is the absolute pressure of a gas, V is the volume it occupies, N is the number of atoms and molecules in the gas, and T is its absolute temperature. The constant ko is called the Boltzmann constant and has the value kg = 1.38x10-23J/K. A very common expression of the ideal gas law uses the number of moles, n- N/NA (NA is Avogadro's number, NA=6.021023 per mole). PV...
The vapor pressure, P, of a certain liquid was measured at two temperatures If you were...
The vapor pressure, P, of a certain liquid was measured at two temperatures If you were going to graphically determine the enthalpy of vaporizaton, AHvap, for this liquid, what points would you plot? The data is shown in this table Number Number T(K) P (kPa) 225 3.75 675 8,62 To avoid rounding errors, use three significant figures in the x values and four significant figures in the y values. point 1 Number Number NOTE: Keep the pressure units in kPa....
The vapor pressure, ?,P, of a certain liquid was measured at two temperatures, ?.T. The data...
The vapor pressure, ?,P, of a certain liquid was measured at two temperatures, ?.T. The data is shown in the table. T (K) P (kPa) 225 3.64 525 5.91 Keep the pressure units in kilopascals. If you were going to graphically determine the enthalpy of vaporizaton, Δ?vap,ΔHvap, for this liquid, what points would you plot? To avoid rounding errors, use three significant figures in the ?x‑values and four significant figures in the ?y‑values. point 1: ?=x= point 1: ?=y= point...
The vapor pressure, P, of a certain liquid was measured at two temperatures, T. If you...
The vapor pressure, P, of a certain liquid was measured at two temperatures, T. If you were going to graphically determine the enthalpy of vaporizaton, AHvap, for this liquid, what points would you plot? The data is shown in this table Number Number T (K) P (kPa) 325 625 To avoid rounding errors, use three significant figures in the x values and four significant figures in the y values point 1:0.003 1.1694 3.22 7.03 Number Number Keep the pressure units...
3. The heat of vaporization of a compound is 512 kJ/mol. When 1.28 mol of this compound vaporize at standard pressure, the entropy increases from 1243 J/K to 1751 J/K. What is the melting point of this compound at standard pressure to three significant figures? A) 1290 K B) 1010 K C) 787 K D) 292 K E) 412 K
The pressure P and volume V of a certain amount of steam in an adiabatic process (a process in which the heat in the system does not change due to proper insulation) fairly follows the equation PVY K where y and K are constants. In an adiabatic experiment, the volume of a certain amount of steam confined in a tank is gradually increased, resulting in a decrease in gas pressure. Using the above equation and linear regression, find the values...
02) Consider a hydrostatic system represented by the thermodynamic variables volume V, pressure P and temperature T. a) Consider entropy S = S(T, V) and derive the equation TdS. Tas = Cvat +T (1) dV. V Show that this equation can be written as follows BT TdS = CydT + PDV where Cv is the thermal capacity at constant volume, B is the isobaric expansiveness and K is isothermal compressibility: b) Consider a gas described by the equation of state...
The ideal gas law states that PV = NkgT where P is the absolute pressure of a gas, V is the volume it occupies, N is the number of atoms and molecules in the gas, and T is its absolute temperature. The constant ko is called the Boltzmann constant and has the value kg = 1.38x10-23J/K. A very common expression of the ideal gas law uses the number of moles, n- N/NA (NA is Avogadro's number, NA=6.021023 per mole). PV...
The vapor pressure, P, of a certain liquid was measured at two temperatures If you were going to graphically determine the enthalpy of vaporizaton, AHvap, for this liquid, what points would you plot? The data is shown in this table Number Number T(K) P (kPa) 225 3.75 675 8,62 To avoid rounding errors, use three significant figures in the x values and four significant figures in the y values. point 1 Number Number NOTE: Keep the pressure units in kPa....
The vapor pressure, P, of a certain liquid was measured at two temperatures, T. If you were going to graphically determine the enthalpy of vaporizaton, AHvap, for this liquid, what points would you plot? The data is shown in this table Number Number T (K) P (kPa) 325 625 To avoid rounding errors, use three significant figures in the x values and four significant figures in the y values point 1:0.003 1.1694 3.22 7.03 Number Number Keep the pressure units...
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