Calculate the change in heat when 18.0 g of water vapor (steam) at 100.0°C condenses to...

Calculate the change in heat when 18.0 g of water vapor (steam) at 100.0°C condenses to liquid water and then cools to 25.0 °C.

Expert Solution

queen_honey_blossom answered 2 years ago

How much heat is released when 85.0 g of steam at 100.0°C is cooled to ice...

How much heat is released when 85.0 g of steam at 100.0°C is cooled to ice at -15.0°C? The enthalpy of vaporization of water is 40.67 kJ/mol, the enthalpy of fusion for water is 6.01 kJ/mol, the molar heat capacity of liquid water is 75.4 J/(mol ⋅ °C), and the molar heat capacity of ice is 36.4 J/(mol ⋅ °C).

When 20.0g of steam at 140.0 °C condenses into 200.0g liquid water at 25.0 °C, what...

When 20.0g of steam at 140.0 °C condenses into 200.0g liquid water at 25.0 °C, what will be the final temperature of the water? Assume that everything takes place in a perfectly insulated enclosure from which there is no heat leak. Data: heat of vaporization for water (Hvap): 40.7 kJ/mole Heat capacity of steam: 2.09 J/g-°C Heat capacity of water: 4.184 J/g-°C Please Explain Step by step

Calculate the heat absorbed when 578 g of ice at −12.7°C melts and then the water...

Calculate the heat absorbed when 578 g of ice at −12.7°C melts and then the water is converted to steam at 205.0°C. The specific heat of ice is 2.03 J/(g°C),the heat of fusion of ice is 6.01 ×103 J/mol, the specific heat of water is 4.18 J/(g°C),the heat of vaporization of water is 4.07 × 104J/mol, and the specific heat of steam is 2.02 J/(g°C).

Suppose that 0.36 g of water at 25 ∘C condenses on the surface of a 51-g...

Suppose that 0.36 g of water at 25 ∘C condenses on the surface of a 51-g block of aluminum that is initially at 25 ∘C. If the heat released during condensation goes only toward heating the metal, what is the final temperature (in ∘C) of the metal block? (The specific heat capacity of aluminum is 0.903 J/g∘C and the heat of vaporization of water at 25 ∘C is 44.0 kJ/mol.)

Saturdated water vapor (steam) is commonly used as a heat source in heat exchanger applications. Why...

Saturdated water vapor (steam) is commonly used as a heat source in heat exchanger applications. Why saturated vapor? Why saturated water vapor? In a plant of any reasonable size, several varieties of saturated steam are commonly available; for example, saturated steam at 4.5,9,17, and 33 bar. But the higher the pressure the lower the useful energy content (why?), and the greater the unit cost. Why then is higher-pressure steam used?

A 147-g sample of steam at 100 ∘C is emitted from a volcano. It condenses, cools,...

A 147-g sample of steam at 100 ∘C is emitted from a volcano. It condenses, cools, and falls as snow at 0 ∘C. (For water, 80. cal (334 J) is needed to melt 1 g of ice or must be removed to freeze 1 g of water and 540 cal (2260 J) is needed to convert 1 g of water to vapor at 100 ∘C.) Part A How many kilojoules of heat were released?

Part A: A calorimeter contains 18.0 mL of water at 13.5∘C. When 2.30 g of X...

Part A: A calorimeter contains 18.0 mL of water at 13.5∘C. When 2.30 g of X (a substance with a molar mass of 69.0 g/mol) is added, it dissolves via the reaction X(s)+H2O(l)→X(aq) and the temperature of the solution increases to 30.0∘C. Calculate the enthalpy change, ΔH, for this reaction per mole of X. Assume that the specific heat of the resulting solution is equal to that of water [4.18 J/(g⋅∘C)], that density of water is 1.00 g/mL, and that...

Saturated steam at 100.0°C is heated to 350.0°C. What is the required heat input (J/s) if...

Saturated steam at 100.0°C is heated to 350.0°C. What is the required heat input (J/s) if a continuous stream flowing at 100 kg/s undergoes the heating process at constant pressure? What is the required heat input (J) if 100 kg undergoes the heating process in a constant-volume container? Use Steam Tables.

Calculate the amount of energy (in kJ) necessary to convert 517 g of liquid water from 0°C to water vapor at 192°C.

Calculate the amount of energy (in kJ) necessary to convert 517 g of liquid water from 0°C to water vapor at 192°C. The molar heat of vaporization (Hvap) of water is 40.79 kJ/mol. The specific heat for water is 4.184 J/g ·°C, and for steam is 1.99 J/g ·° C. (Assume that the specific heat values do not change over the range of temperatures in the problem.) ______kJ

Calculate the amount of energy (in kJ) necessary to convert 517 g of liquid water from 0° C to water vapor at 177°C.

Calculate the amount of energy (in kJ) necessary to convert 517 g of liquid water from 0° C to water vapor at 177°C. The molar heat of vaporization (Hvap) of water is 40.79 kJ/mol. The specific heat for water is 4.184 J/g ·°C, and for steam is 1.99 J/g ·°C. (Assume that the specific heat values do not change over the range of temperatures in the problem.)

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