Heat is added to a substance at a constant rate. The substance
starts as a solid and is melted; the liquid is heated and
vaporized; finally, the vapor is heated. This process is shown in
the graph. The latent heat of fusion can be found by
Homework Answers
A
q = mcΔT
B
= m·ΔHf
where
q = heat energy
m = mass
ΔHf = heat of fusion
C
q = mcΔT
D
q = m·ΔHv
where
q = heat energy
m = mass
ΔHv = heat of vaporization
E
q = mcΔT
so I summarized how you will apply formula to find heat in each step
so
latent heat of fusion can be found by B
****************************************************************************
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Heat is added to a substance at a constant rate. The substance starts as a solid...
n Hum and copper to answer this question Heat is added to a solid substance at...
n Hum and copper to answer this question Heat is added to a solid substance at a constant rate. added. The graph shows the temperature of the substance as heat is E. Heat Added Which part of the graph is representative of the liquid state? A) A в) в C) C D) D Based on the graph above, which of the following statements is correct? A) The heat of required to warm the solid up the melting point is the...
Substance X is known to exist at 1atm in the solid, liquid, or vapor phase, depending...
Substance X is known to exist at 1atm in the solid, liquid, or vapor phase, depending on the temperature. Additionally, the values of these other properties of Xhave been determined.: melting point 15.°C enthalpy of fusion 8.00/kJmol density 2.00/gcm3 (solid) 1.60/gmL (liquid) boiling point 60.°C enthalpy of vaporization 31.00/kJmol heat capacity 36.·J·K−1mol−1 (solid) 29.·J·K−1mol−1 (liquid) 55.·J·K−1mol−1 (vapor) You may also assume X behaves as an ideal gas in the vapor phase. Suppose a small sample of X at −20°C is...
. 1. Is the melting point of substance A (a) greater than, (b) less than or...
.
1. Is the melting point of substance A (a) greater than, (b)
less than or (c) equal to the
melting point of substance B?
Explain your reasoning.
2. Is the specific heat of substance A in its solid state (a)
greater than, less than, or (c)
equal to the specific heat of substance B in its solid
state?
Explain your reasoning.
3. Is the latent heat of fusion of substance A (a) greater than,
(b) less than or (c)...
// Chemical potential/phases A substance has three phases: gas, liquid, and solid. The chemical potentials of various phases are illustrated below. T (K) 1) For a given temperature, which of the sta...
//
Chemical potential/phases A substance has three phases: gas, liquid, and solid. The chemical potentials of various phases are illustrated below. T (K) 1) For a given temperature, which of the states represents an equilibrium condition? Submit 2) If the substance starts out in state Q and is held at constant temperature, what happens if it is allowed to reach equilibrium? The substance will freeze. The substance will evaporate The substance will melt and evaporate. The substance will sublime. Nothing...
please show the steps for A and B and C A Heat is added to a...
please show the steps for A and B and C
A Heat is added to a pure substance in a closed container at a constant rate. The figure shows a graph of the temperature of the substance as a function of time. If Lf - latent heat of fusion and Ly - latent heat of vaporization, what is the value of the ratio Ly/L for this substance? Temp. A) 5.0 B) 4.5 Time C) 1.5 D) 3.5 E) 7.2 B...
A pure solid sample of Substance X is put into an evacuated flask. The flask is...
A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady rate and the temperature recorded as time passes. Here is a graph of the results: 190.- TI temperature (°C) 150. 30. heat added (kJ/mol) Use this graph to answer the following questions: What is the melting point of X ? 1°C What phase (physical state) of X would you expect to find in the flask after 19 kJ/mol of heat...
X is known to exist at 1 atm in the solid, liquid, or vapor phase, depending...
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 Substance X have been determined: boiling point 35. melting point enthalpy of fusion6.00 kJ/mol enthalpy of vaporization 34.00 kJ/mol 46. J-K mol (solid) 73. JK mol (vapor 2.80 g/em (solid) 2.40 g/mL (liquid density heat capacity61.JKmol Ciquid) You may also assume X behaves as an ideal gas in the vapor phase. Suppose a...
How much heat should be added to 0.45kg of aluminium to change it from its solid...
How much heat should be added to 0.45kg of aluminium to change it from its solid state to at Bocto the liquid state Celoc polit) The latent heat of aluminium fusion is 4.0X10S TIRG
A synthetic oil melts at 100 K, boils at 200 K, has a latent heat of...
A synthetic oil melts at 100 K, boils at 200 K, has a latent heat of fusion of 100 kJ/kg, a latent heat of vaporization of 1 MJ/kg, a solid specific heat of 1000 J/kgK, liquid specific heat of 2000 J/kgK, and vapor specific heat of 3000 J/kgK. Find the final state and temperature if 950 kJ of heat are added to 5 kg of the solid at 90 K.
Find the final temperature and mass in each phase when 50 kJ of heat is added...
Find the final temperature and mass in each phase when 50 kJ of heat is added to 1 kg of a solid at 90 K if its melting temperature is 100 K, its boiling temperature is 200 K, its specific heat as a solid is 1000 J/kg·K, and as a liquid is 2000 J/kg·K, and its latent heat of fusion is 100 kJ/kg.
n Hum and copper to answer this question Heat is added to a solid substance at a constant rate. added. The graph shows the temperature of the substance as heat is E. Heat Added Which part of the graph is representative of the liquid state? A) A в) в C) C D) D Based on the graph above, which of the following statements is correct? A) The heat of required to warm the solid up the melting point is the...
.
1. Is the melting point of substance A (a) greater than, (b)
less than or (c) equal to the
melting point of substance B?
Explain your reasoning.
2. Is the specific heat of substance A in its solid state (a)
greater than, less than, or (c)
equal to the specific heat of substance B in its solid
state?
Explain your reasoning.
3. Is the latent heat of fusion of substance A (a) greater than,
(b) less than or (c)...
//
Chemical potential/phases A substance has three phases: gas, liquid, and solid. The chemical potentials of various phases are illustrated below. T (K) 1) For a given temperature, which of the states represents an equilibrium condition? Submit 2) If the substance starts out in state Q and is held at constant temperature, what happens if it is allowed to reach equilibrium? The substance will freeze. The substance will evaporate The substance will melt and evaporate. The substance will sublime. Nothing...
please show the steps for A and B and C
A Heat is added to a pure substance in a closed container at a constant rate. The figure shows a graph of the temperature of the substance as a function of time. If Lf - latent heat of fusion and Ly - latent heat of vaporization, what is the value of the ratio Ly/L for this substance? Temp. A) 5.0 B) 4.5 Time C) 1.5 D) 3.5 E) 7.2 B...
A pure solid sample of Substance X is put into an evacuated flask. The flask is heated at a steady rate and the temperature recorded as time passes. Here is a graph of the results: 190.- TI temperature (°C) 150. 30. heat added (kJ/mol) Use this graph to answer the following questions: What is the melting point of X ? 1°C What phase (physical state) of X would you expect to find in the flask after 19 kJ/mol of heat...
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 Substance X have been determined: boiling point 35. melting point enthalpy of fusion6.00 kJ/mol enthalpy of vaporization 34.00 kJ/mol 46. J-K mol (solid) 73. JK mol (vapor 2.80 g/em (solid) 2.40 g/mL (liquid density heat capacity61.JKmol Ciquid) You may also assume X behaves as an ideal gas in the vapor phase. Suppose a...
How much heat should be added to 0.45kg of aluminium to change it from its solid state to at Bocto the liquid state Celoc polit) The latent heat of aluminium fusion is 4.0X10S TIRG
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