How much heat is required to convert 24.0 g of ethanol at 25 ∘C to the vapor phase at 78 ∘C?         Express your answer in kilojoules to three significant figures.

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Q: How much heat ( in joules) does it take to heat 45.0 g of 23.0 C water until it is steam at 112.0 C?

A: Answer: Heat (in joule) = 117319.5 J

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A: Given data, Mass = 5 g T1=100°CT2=120°C The specific heat of steam(C) =  0.5 cal/g•°C. To calculate…

Q: How much heat (in J) would be required to convert 2.31 mol of a pure substance from a liquid at…

A: Given: Moles of substance = 2.31 mol. Initial temperature of substance = 40.0 oC And final…

Q: Water, with mass of 339.83 grams at 26.45 degrees celsius, is heated at constant pressure. The water…

A: Given: Mass of water = 339.83 g Initial temperature = 26.45 °C        Or initial temperature =…

Q: Calculate the energy (in kJ) required to heat 0.491 grams of water from -46.0 ℃ to 142.5 ℃.

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Q: Calculate the total heat in kJ required to raise the temperature of 25.0 g of solid ethanol at…

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Q: A 31.1 g wafer of pure gold at 69.3 is submerged into 64.2 g of water at 27.8 in an insulated…

A: given: mass of gold = 31.3 g initial temperature of gold = 69.3oC mass of water = 64.2 g initial…

Q: You mix 18.0g of ice that's at -25.0C with 150.0 mL of water that's at 38.0C. Once the ice has…

A: Heat released is given by  Q = m c (T2-T1) Where m is the mass of the substance  C is the specific…

Q: Calculate the energy absorbed/released, in kJ, when 12.72 g of liquid water is turned to ice. Be…

A: In liquid state water molecules have less intermolecular forces of attraction compare to solid.

Q: A generic solid, X, has a molar mass of 61.6 g/mol. In a constant-pressure calorimeter, 18.3 g of X…

A: Heat absorbed/ released by a solution can be calculated by usingthe expression:Q = m.Cp.∆T where, m=…

Q: If a 348 g sample of steam at 127oC is cooled to 103oC, find the change in heat content of the…

A: NOTE : Since you've posted multiple questions,we've solved first question for you. If you want any…

Q: A 35.0 g block of metal at 80.0 °C is added to a mixture of 100.0 g of water and 15.0 g of ice in an…

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Q: What change in energy is required to heat 55.00 g of water at 15.00 degrees C to vapor at 180.0…

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Q: identify whether an ice cube melting has a negative or positive change in enthalpy

A: Given: to identify whether an ice cube melting has a negative or positive change in enthalpy.

Q: How much heat is absorbed when 25.0g of water warms from 10.2oC to 38.0oC

A: According to calorimetry,  q = m × c × ∆T Where q = heat released or heat absorbed,   c = specific…

Q: 39.2 J of energy is absorbed by 5.0 g of a substance. In the process, it's temperature changes from…

A: Given  Mass of substance ( m )  = 5 gram  Initial Temperature ( T1 ) =  15 ℃  Final Temperature ( T2…

Q: A 26.2-mL sample of benzene at 26.1°C was cooled to its melting point, 5.5 °C, and then frozen at…

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Q: Calculate the amount of heat needed to boil 32.6 g of methanol (CHL OH), beginning from a…

A: Given: Mass of methanol = 32.6 g. And the initial temperature of methanol = 43.6 oC

Q: Calculate the change in heat when 18.00  g of water vapor (steam) at 100.0°C condenses to liquid…

A: The heat for the above process will be given by  Q = -ΔHvap X n + mCpΔT…

Q: Which of the following would you use to warm up a cold bath containing 30kg of water at 20 degree…

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Q: 3. How much heat is absorbed when 11.2 grams of graphite is heated from 22.0 °C to 55.0°C if the…

A: heat absorbed, q = ms∆T                             = 11.2 g x 0.170 cal/goC x ( 55.0 - 22.0 ) oC…

Q: What quantity of heat, in kJ, is required to convert 13.0 g of ethanol (C₂H₅OH) at 23.0°C to a vapor…

A: We are given ethanol mass of ethanol=13.0 gm Initial temperatureTi=23°C final temperatureTf=78.3°C…

Q: 25.0 kJ of heat is added to 52.0g of ice at -10.0°C. What is the temperature of the water (in °C…

A: To Solve this problem we will use the formula q = m• c •∆T  Where,  q = heat abosbed  m = mass of…

Q: Chlorofluorocarbons (CFCs) such as CF2Cl2 are refrigerated whose use has been phased out because of…

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Q: Calculate the amount of heat needed to raise the temperature of 2.34 moles of pure liquid ethanol…

A: The initial temperature of ethanol is -84°C in kelvin scale the value is (T1)=-84+273K= 189K the…

Q: Isopropyl alcohol, also known as rubbing alcohol, can be used for a variety of cleaning and…

A: Note : the change in temperature on temperature scale either in kelvin or in degree celsius is same…

Q: What is the heat generated/released when 60 g of copper (specific heat= 0.39 J/C) is cooled from 40…

A: Given, mass, m = 60 g specific heat, c = 0.39 J/g.°C temperature, ΔT =  40 - 30°C = 10°C The formula…

Q: 31.0-g sample of water at 280. K is mixed with 49.0 g water at 330. K. Calculate the final…

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Q: How much heat (in kJ) is required to convert 49.6 grams of butane (C4H10) from an initial…

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Q: heat

A: In these processes , phase of water is changing . So to calculate the heat required , we would use…

Q: A 200.0 g of tin released 394 calories (cal.) of heat when cooled from 100.0°C to 24.5°C. What is…

A: Given information,    Mass of metal is 200.0 g,    Amount of heat released is 394 cal,…

Q: What change in energy is required to heat 55.00 g of water at 15.00 0C to vapor at 180.0 0C?

A: The quantity of heat transfers from one form to another is denoted as Q. Given the mass of…

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Q: Calculate the amount of heat needed to boil 47.7g of octane (C8H18), beginning from a temperature of…

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Q: 7. How much heat is gained when the temperature of 288 g of liquid water is raised by 25 °C from…

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Q: Chlorofluorocarbons are commonly used as Freon in refrigerators and air conditioners. Cooling the…

A: The specific heat of liquid, (C1)= 0.91 J/g⋅K  or  0.91 J/g⋅0C. The specific heat of gas (C2) = 0.67…

Q: Chemistry How many grams of ice at -12.3 •C can be completely converted to liquid at 29.4 °C if the…

A: Given Details: The temperature of Ice = -12.3°C The temperature of Liquid = 29.4°C Energy = 5.37 x…

Q: Calculate the amount of heat needed to boil 87.1 g of acetic acid (HCH3CO2), beginning from a…

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Q: How much heat is required to convert 24.0 g of ethanol at − 146 ∘C to the vapor phase at 78 ∘C?…

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Q: What is the heat capacity of 2.63 mol of liquid water?   How many kJ of heat are needed to raise…

A: Specific heat capacity of liquid water = 4.184 J/gm°C  Hence, 2.63 moles = 2.63*18 = 47.34 gm  So,…

Q: What is the change in heat (in kJ to one decimal place) when 1.75 L of H2O condenses under 1 atm…

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Q: Calculate the heat in kJ for 175 g of water vapor condensing to liquid water from 228.0 oC to 175.0…

A: Given: Mass of water vapour = 175 g Initial temperature (T1) = 228°C Final temperature (T2) = 175°C…

Q: Fifty grams of an unknown substance at 115 degrees Celsius is added to 100 gof liquid water at 20…

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