Part B How long would it take for 1.50 mol of water at 100.0 °C to be converted completely into steam if heat were added at a constant rate of 25.0 J/s ? Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s) μA Value Submit Units ?

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Part B
How long would it take for 1.50 mol of water at 100.0 °C to be converted completely into steam if heat were added at a constant rate
of 25.0 J/s ?
Express your answer to three significant figures and include the appropriate units.
► View Available Hint(s)
Value
Submit
Units
2
?
Transcribed Image Text:Part B How long would it take for 1.50 mol of water at 100.0 °C to be converted completely into steam if heat were added at a constant rate of 25.0 J/s ? Express your answer to three significant figures and include the appropriate units. ► View Available Hint(s) Value Submit Units 2 ?
Equations
The heat energy associated with a change in temperature that does not involve a change in phase is given by
q=msAT
where q is heat in joules, m is mass in grams, s is specific heat in joules per gram-degree Celsius, J/(g · °C), and AT is the
temperature change in degrees Celsius. The heat energy associated with a change in phase at constant temperature is given by
q=mΔΗ
where q is heat in joules, m is mass in grams, and AH is the enthalpy in joules per gram.
Physical constants
The constants for H₂O are shown here:
●
●
Specific heat of ice: Sice = 2.09 J/(g. °C)
Specific heat of liquid water: swater = 4.18 J/(g · °C)
Enthalpy of fusion (H₂O(s)→H₂O(1)): AHfus = 334 J/g
Enthalpy of vaporization (H₂O(1)→H₂O(g)): AHvap = 2250 J/g
Transcribed Image Text:Equations The heat energy associated with a change in temperature that does not involve a change in phase is given by q=msAT where q is heat in joules, m is mass in grams, s is specific heat in joules per gram-degree Celsius, J/(g · °C), and AT is the temperature change in degrees Celsius. The heat energy associated with a change in phase at constant temperature is given by q=mΔΗ where q is heat in joules, m is mass in grams, and AH is the enthalpy in joules per gram. Physical constants The constants for H₂O are shown here: ● ● Specific heat of ice: Sice = 2.09 J/(g. °C) Specific heat of liquid water: swater = 4.18 J/(g · °C) Enthalpy of fusion (H₂O(s)→H₂O(1)): AHfus = 334 J/g Enthalpy of vaporization (H₂O(1)→H₂O(g)): AHvap = 2250 J/g
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