Calculate the amount of heat needed to melt 120.0 g when H,el 109 J/ g of pure ethanol and the specific heat capacity is (2.45J/g °C). 2. ethanol

Q: The heat of fusion of chloroform (CHCl3) at its normal melting point of -63°C is 9.2 kJ/mol, while…

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Q: How much heat would need to be removed to cool 29.5 g of water from 25.6°C to -10.7°C? Csolid =…

A: We have to predict the amount of heat removed from the water to have given temperature change.

Q: How much heat in kJ is required to convert 916 g of ice at-11.0°C to liquid water at 99.0°C? 706

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Q: How much energy is needed to boil 45.0g of water at its boiling point? Water's heat of vaporization…

A: Given: Mass of water = 45.0 g. And heat of vaporization of water = 40.65 KJ/mol.

Q: ts) The heat of fusion of water is 6.01 kJ/mol. The heat capacity of liquid water is 75.3 J/mol · K.…

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Q: Calculate the heat in kJ for 9.98 g of ice at -10.0 °C cooled to -75.0 °C with a specific heat…

A: Specific heat capacity of a substance is the heat capacity of a sample of the substance divided…

Q: From the data below, calculate the total heat (in J) needed to convert 25.00 g of ice at –8.00°C to…

A: Since we want to convert ice at -8 oC to liquid at 0.350 oC Hence the process will involve below…

Q: The heat of fusion of pure silicon is 43.4 kJ/mol. How much energy in kJ would be needed to melt a…

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Q: Suppose that 1.15 g of rubbing alcohol (C3H8O) evaporates from a 65.0-g aluminum block. If the…

A: The given data contains, mass of block = 65.0 g. Temperature ( initial ) = 25°C

Q: You place a plastic bottle containing 0.600 liters of water at 25.0°C in a freezer that uses CF₂Cl₂…

A: Given that: Volume of water at 25.0oC = 0.6 L = 600 mLHeat of vaporization of CF2Cl2 = 158…

Q: The molar heat of vaporization of water at 25 °C is +43.9 kJ/mol. How many kilojoules of heat would…

A: Given, The molar heat of vaporization of water at 25°C is +43.9 kJmol

Q: Determine the total amount of energy required to heat 17.5 g of ethanol at -90.0 °C to ethanol vapor…

A: The mass of one mole of ethanol is 46 g/mol. This implies that 17.5 g of ethanol constitutes 0.38…

Q: 12. Patients with a high body temperature are often given "alcohol baths". The heat of vaporization…

A: Heat of vaporization means the heat required to covert a fixed amount of liquid to gas.

Q: into

A: T1 = -151.0 °C T2 = 98.0 °C Tm =-117.3 °C Tb = 78.3 °C

Q: he heat of vaporization of water is 540 cal/g. How much heat is needed to change 2.

A: Solution-    Heat of vaporization of water= 540 cal/g means amount of heat required to vaporize…

Q: Determine the total amount of heat in kJ needed to warm 36.9 g of ice at -29.4 °C to water at 39 °C.…

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Q: How much heat (in kJ) would be required to convert 26.0 g of ice to water at 0.00°C? (AHfus = 6.01…

A: Enthalpy of fusion∆Hfus is the amount of heat required to melt an unit mass of a solid at its…

Q: Calculate the amount of heat (in kJ) required to convert 75.0og of solid water to liquid water at…

A:

Q: 1. Calculate the quentity of energy required to change 27.5 g of liquid water to steam at 100 C. The…

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Q: What information about water is needed to calculate theenthalpy change for converting 1 mol H2O1g2…

A: Enthalpy change is the amount of heat evolved or absorbed in a reaction carried out at constant…

Q: How much heat is released ( in J) when 54.0 g of water at 10.0 °C is cooled to form ice at - 10.0…

A: Given the mass of water, m = 54.0 g  The initial state is water at 10.0 oC.  The final state is ice…

Q: How much energy (in kJ) is needed to heat 5.28 g of ice from -18oC to 30.0oC?  The heat of fusion of…

A: Given : Mass of ice = 5.28 g Initial temperature of ice = -18.0 oC Final temperature of water = 30.0…

Q: The heat of vaporization for CH4 is 152 cal/g. How much heat is needed (in calories) to vaporize 0.4…

A: The heat of vaporization for CH4 is = 152 cal/g The amount of heat is needed (in calories) to…

Q: The heat of fusion of pure silicon is 43.4 kJ/mol. How much energy (kJ) would be needed to melt…

A: The amount of heat required to change 1 g of solid to liquid at the same temperature is known as…

Q: The heat of fusion of pure silicon is 43.5 kJ/mol. How much energy would be needed to melt a 5.24-g…

A: Mass of silicon= 5.24g MOLAR mass = 28g/mol Mole= mass÷molar mass=  5.24÷28= 0.18mole 1 mole Si…

Q: 13. How much heat in kJ is needed to warm 31.6 g of ice from 10 °C to steam at 175 °C. The heat…

A: Mass of ice = 31.6 g  Molar mass of ice = 18.00 g.mol-  Delta Hfusion = 6.02 × 103 J.mol-  Delta…

Q: What does not correspond to the molar heat of fusion? O AHfus the heat absorbed by one mole of a…

A: The molar heat of fusion of a substance is the heat absorbed or released when 1 mole of the…

Q: How much heat energy is required to boil 78.8 g of ammonia, NH, ? The molar heat of vaporization of…

A: We will first calculate moles of NH3 then find heat required to boil it.

Q: A 389.7 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C.…

A: Mass of unknown sample = M= 389.7 gMolar Mass of Unknown Sample = 92.41 g/moleNo of moles of Unknown…

Q: Calculate the heat required to vaporize 102 g of water at a temperature of 100oC   if the Heat of…

A: The heat of Vaporization: When we heat the liquid it gains energy and change to the vapor phase.…

Q: How much heat (in kJ) would be required to convert 23.4 g of ice to water at 0.00°C? (AHfus = 6.01…

A:

Q: How much heat energy is required to boil 66.7 g of ammonia, NH3? The molar heat of vaporization of…

A: Mass of NH3 = 66.7 g  Molar heat of vaporization = 23.4 KJ/mol

Q: How much heat energy is required to boil 23.0 g of ammonia, NH,? The molar heat of vaporization of…

A: Given data: The mass of ammonia m= 23.0 g. The molar heat of vaporization of ammonia = 23.4 kJ/mol.…

Q: What is the heat of vaporization in kJ/mol?

A: P1 = 0.217atm P2 = 0.851atm T1 =-54.3°C or  218.85 K T2 = 1.79°C or  274.94 K

Q: Naphthalene, an organic substance often used in mothballs, has a heat of fusion of 35.7 cal/g (149…

A: Mass of naphthalene can be calculated from the given Number of moles and molar mass:

Q: n ice cube tray contains enough water at 22.0oC to make 18 ice cubes that each have a mass of 30.0…

A:

Q: What quantity of heat is required to convert 49 g of ethanol (C₂H₅OH) at 23.0°C to a vapor at 78.3°C…

A: Given : Initial temperature of ethanol = 23.0 oC  Final temperature of ethanol = boiling point…

Q: Use the information provided below to calculate the quantity of heat (in kJ) required to convert…

A: Note - Since you have asked multiple questions, we will solve the first question for you. If you…

Q: Ethanol 1C2H5OH2 melts at -114 °C and boils at 78 °C.The enthalpy of fusion of ethanol is 5.02…

A: (a)Given, The enthalpy of fusion of ethanol is 5.02 kJ/mol. The enthalpy of vaporization of ethanol…

Q: A 459.3 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C.…

A:

Q: A 417.3 gram sample of an unknown substance (MM = 92.41 g/mol) is heated from -23.1 °C to 51.8 °C.…

A: moles n is defines as the mass taken upon molar mass  moles =mass molar massmoles of unknown…

Q: Ethanol (C2 H;OH) melts at -114 °C. The enthalpy of fusion is 5.02 kJ/mol. The specific heats of…

A: Given,  Ethanol melts at -144°C Molar mass of Ethanol (C2H5OH) = 46 g/mol  Enthalpy of fusion = 5.02…

Q: A tray of liquid water is placed in a freezer where it cools from 20 dgeC to -5 degC. What is the…

A: Initial temperature = 20 °C Final temperature = - 5 °C Specific heat of liquid water = 2 ( specific…

Q: Calculate the heat required to convert 25.0 g solid ethanol at -135.0 C to liquid at 72.0 C.…

A:

Q: The enthalpy for boiling water is 40.7 kJ/mol. How much heat (in kJ) is required to boil 322.1 g of…

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Q: A 791.0 g sample of acetone sitting in the lab has a temperature of 21.7°C. How much heat would be…

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Q: Calculate the quantity of heat required to convert 70.5 g of H2O(s) at -25°C to H2O(g) at 125°C.…

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Q: The following information is given for mercury at latm: AHvap(357°C)= 59.3 kJ/mol boiling point 357…

A: Given, mass of sample = 49.0g.Moles of mercury can be calculated as