When’s molecular compound melts, there is no temperature change because the heat energy is used to:

Q: Why is the enthalpy of vaporization for water much greater than the vaporization of fusion? What…

A: Since in case of fusion, we just try to lose the packing of the molecules from solid to liquid  And…

Q: Is dry ice evaporating  process exothermic or endothermic? Indicate the sign of ∆H.

A: Given: dry ice evaporating. The evaporation of dry ice requires input of heat energy.

Q: The main reason that distillation is a costly method for purifying water is the high energy required…

A: Distillation is the process in which the components of a mixture are separated on basis of different…

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: If humans instead had ice in their body and the main mechanism of heat loss was through the melting…

A: Mass of ice needed would be less because in water there will be only temperature change but in case…

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: How much heat would need to be removed to cool 50.3 g of water from 25.6°C to -10.7°C? Csolid =…

A: Mass of water = 50.3 g In the conversion of water from 25.6 ◦C to – 10.7 ◦C there is following steps…

Q: Explain how heat energy affects a substance. Describe how the particles change as the system is…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: Based on the thermodynamic properties provided for water, determine the energy change when the…

A: Mass of water = 0.350 kg = 350 g Molar mass of water = 18 g/mol Moles of water = 350 g / 18 g/mol =…

Q: 104. A 685 mL sample of Hg(l) at 20°C is added to a large quantity of liquidN kept at its boiling…

A: Given that : The volume of Hg(l) = 685 mL Initial temperature of mercury = 20°C The specific heat of…

Q: Enthalpy change during sublimation is equal to the total enthalpy changes of which processes?

A: Sublimation is a direct conversion of solid into vapour. (solid ---> vapour) . It can be written…

Q: What type(s) of intermolecular forces is (are) expected between NICI, molecules?

A: Step 1          Nickel(II) chloride is a chemical compound with formula NiCl2.  In NiCl2 each Ni2+…

Q: The energy required to melt 1.00 g of ice at 0 °C is 333 J. If one ice cube has a mass of 63.5 g and…

A: The term melting has been defined as a physical process which results ibn the transition of the…

Q: 125 g of dry ice (solid CO2) is dropped into a beaker containing 500 g of 66°C water. The dry ice…

A:

Q: How much heat energy was lost by the liquid ethanol? How much heat energy was gained by the solid…

A:

Q: If 30.6 calories are required to vaporize 25g of water, what is the heat of vaporization (in…

A: The required calories for the vaporization of 25 g of water is = 30.6 calories The heat of…

Q: How are inter-molecular forces important?

A: Intermolecular forces are the forces which shows interaction between molecules, including forces of…

Q: How much heat is required to change  266.4 g  of ice at 0 ° C to water at  0 ° C?

A: The mass of ice is = 266.4 g The temperature of ice is = 0oC The temperature of the water is = 0oC…

Q: Assuming that no heat is lost to the surroundings, what is the temperature of the entire water…

A: Given thatMass of ice = 24.0 gInitial temperature of ice = 0.00oCMass of water = 600.0 g Initial…

Q: Why is it important that the heat capacity, latent heat of fusion and latent heat of vaporization of…

A: Heat capacity is the anount of heat required to  increase a particular amount of the substance.…

Q: ind molar heat of fusion for ice

A: According to first law of thermodynamics,the total energy of a system remains conserved.If one…

Q: Boiling is the temperature at which the vapor pressure of the liquid exceeds the atmospheric…

A: At high altitude, atmospheric pressure is low and hence water boils at lower temperature.

Q: Heat is added to boiling water. Explain why the temperature of the boiling water does not change.…

A: Matter exists in different states. Water can exist in solid ice, liquid water and water vapors.…

Q: How many joules of energy are required to change 50.0 g of Cu from 25.0°C to a liquid at its melting…

A: Given:  Mass of Cu given= 50.0 g  Initial temperature= 25°C  Final temperature= 1083°C  Specific…

Q: A substance with a molar mass of 187.63 g mol−1 has the following thermochemical properties: cliquid…

A:

Q: A metal door opens more easily when it colder outside. The reason for this is that , as the metal…

A: Different types of materials respond differently to the temeparature changes. Metals are more…

Q: How much heat energy is needed to heat and then completely melt a 6.00 gram solid gold ring at an…

A: The required amount of energy from a solid state to the liquid state can be determined by the…

Q: It requires three steps to convert a 265.0 gram sample of solid ethanol at -141.0°C to into a liquid…

A:

Q: How many grams of benzene, C,H,, can be melted with 21.8 kJ of heat energy? The molar heat of fusion…

A: Given data: The heat energy (q)=21.8 kJ. The molar heat of fusion of benzene=9.95 kJ/mol. To find:…

Q: Based on the picture: a. Which object will be heated slower? Why? b. Which will release heat…

A: In the given picture, the given compound are water and soil. a) The object that will be heated…

Q: A block of Cu weighing 52.6g was heated from solid state to a liquid at its melting point of 1083°C.…

A: Mass of copper block = 52.6 gm

Q: The heat of vaporization for ethyl ether is 351 Jig and that for ethyl alcohol is 855 Jig. From…

A: Given: Heat of vaporization for ethyl ether = 351 J/g. And the heat of vaporization for ethyl…

Q: Consider the heating curve for 1.00 mole of an unknown substance as it is heated from a solid to a…

A: To find out the curve which represent the heat of vaporization. The heat curve for the 1.00 mole of…

Q: Calculate the heat absorbed when 35.39 g of some substance at 13.16°C is completely melted. The…

A:

Q: A normal size ice cube has a mass of 50.0 g. How much energy will it take to melt the ice and then…

A:

Q: Given: The heat of fusion of ice is 333 Jg.  The fusion of ice can be represented as : H2O(s)…

A: The temperature for the fusion of water is 0oC or 273.15 K. The entropy of fusion (ΔSofusion) of…

Q: In which phase is the potential energy at the highest level in the above heating curve?

A: In the heat curve above:E → represent solid stateD → represent  conversion from solid to liquidC →…

Q: Latent heat of fusion of ice in cal/g

A: ANSWER

Q: The heat required to raise the temperature of 52.00 g of chromium by 1°C is callec its heat of…

A: Given is, heat required to raised the temperature of 52.00g of chromium by 1°C is called ....?

Q: The heat of vaporization of water at the normal boiling point, 373.3K, is 40.66kJ/mol. The specific…

A: For any specific compound that possess an amount of 1.0 , the heat energy (q) that is required for…

Q: Calculate the mass of water that can be vaporized with 211 kJ of heat at the boiling point.

A: Heat of water (q) = 211 KJ Mass of water (m) = ? • Heat is related with enthalpy of vaporization as…

Q: What's the heat change in Joules for vaporization of 9.00g of water at 100 degrees celcius

A: Heat of vaporization of water is 2256 J/g.Thus, when 1 mol of water is vaporised, 2256J/g heat is…

Q: How much energy is required to vaporize 250 g of water at its boiling point?

A: The energy required for the vaporization of water can be calculated from the standard value of the…

Q: What is the heat of fusion of a metal if 22.8 g of the metal requires 2935J to  melt?

A: Given that: Mass of metal (m) = 22.8g Heat (q) = 2935 J Heat of fusion ∆Hf =?

Q: Determine the amount of heat (in kJ) required to convert 8.24 moles of liquid methanol at-22°C into…

A:

Q: Using a phase diagram, explain why the sublimation of ice is not possible at room temperature

A: The solution is as follows: