a) Arrange the following according to increasing melting point. Explain. MgO CO; O2 H;O b) Explain why any substance's heat of fusion is generally lower than its heat of vaporization.

Q: Why doesnt carbon dioxide have a normal melting point and a normal boiling point whereas water has

A: The triple point of water is at 0.0098 degree Celsius and 4.58torr whereas carbon dioxide is ar…

Q: How much heat energy is required to convert 48.7 g of solid ethanol at -114.5 °C to gasesous ethanol…

A: To find the amount of energy required to convert 48.7 g of solid ethanol at -114.5oC to gaseous…

Q: What amount of heat (in kJ), is required to convert 29.3 g of an unknown solid (MM = 83.21 g/mol) at…

A:

Q: Which substance has the lowest vapor pressure at 25C ?   a. H2S   b. O2   c. H2O   d. CO2

A: Vapour pressure may be defined as:-…

Q: What amount of heat (in kJ) is required to convert 14.2 g of an unknown solid (MM = 67.44 g/mol) at…

A:

Q: Which phrase best describes the vapor point of a substance

A: Vapor point is the temperature at which the transition of substance from liquid phase to gas phase…

Q: Match the following as to the type of crystal the substance will most likely be in the solid state:

A: The compounds are generally divided into 2 types of solids, they are ionic and molecular solids. In…

Q: What is the vapor pressure curve for the solid? OAB BF BD O CE

A: The vapor pressure curve signifies the stability of all three states at different temperatures and…

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: 5. A 1.111 mole of ice at -15°C is mixed with 100 g of water at 90 C. Calculate the final…

A: The given information is: Moles of ice = 1.111 mol Temperature of ice = -15°C = (273-15) = 258 K…

Q: Is vaporization an exothermic or endothermic process? Based on Le Châtelier’s principle?

A: EXOTHERMIC PROCESS The process in which energy is released from the system to the surrounding in the…

Q: The vapor pressure of phosphorus trichloride (PCI3) is 119.7 mmHg at 25.00°C. What will the va…

A:

Q: 11.) A) Which would have a greater melting point, (a) or (b)? Explain. B) Which would have a greater…

A: The melting point is defined as the temperature which is required to melt solid substances. It…

Q: (a) Why is the heat of fusion (ΔHfus) of a substance smaller than its heat of vaporization…

A: The energy required for one unit of a solid to melt without changing its temperature is known as…

Q: The vapor pressure of phosphorus trichloride (PCl3) is 119.7 mmHg at 25.00°C. What will the vapor…

A: The temperature has to be converted from degree Celsius to Kelvin.

Q: The enthalpy of vaporization of Substance X is 16.0kJmol and its normal boiling point is 123.°C.…

A: We have to Calculate the vapor pressure of X at −35°C.

Q: Calculate the amount. of heat required to completely evaporate 625 ml of water at 25C. the enthalpy…

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Q: Diethyl ether is a volatile, highly flammable organic liquid that is used mainly as a solvent.  The…

A:

Q: Why does increasing the temperature cause a substance to change in succession from a solid to a…

A: As you have posted multiple questions in a single request, we will solve the first question for you.…

Q: Rank the following in order of decreasingsurface tension ata given temperature, and explain your…

A: Surface tension is the property of a liquid by which it tends to minimize its surface area. This…

Q: does LiF have a higher vapor pressure at 25oC than H2S?

A: FALSE - LiF will have higher vapor pressure at 25 degree C than H2S Note: LiF has strong electro…

Q: How much heat in cal is necessary to vaporize 685 g of h2o at 100 degrees c?

A: Latent heat is the amount of heat, which is released or absorbed by a substance when it is…

Q: (a) Why is the heat of fusion (ΔHբᵤₛ) of a substance smallerthan its heat of vaporization…

A: a) Heat of fusion does not completely break the intermolecular bond, but rather making the bond…

Q: How much heat is needed to melt 466 g of silver that is at 22.3 ºC?

A: Given that : Mass of Silver = 466g Initial temperature (T1) = 22.3°C Melting point of Silver (T2) =…

Q: Describe the energetics of vaporization?

A: It is also called as enthalpy of vaporization. Vaporization enthalpy, also known as vaporization…

Q: How does increasing the temperature of a liquid affect the rate of vaporization? Increasing the…

A: All the details are explained in the handwritten solution.

Q: A substance that is a SOLID is most likely to have IM forces and be at a _temperature: A. weak, low…

A: A solid substance has strong intermolecular forces amongst its molecules. These strong forces are…

Q: 1. Which of the following pairs of substances in the liquid state, would have greater vapor pressure…

A:

Q: Solid thallium(I) chloride has the same kind of crystal structure as CsCl which is pictured below:

A:

Q: 1) the approximate melting point for this substance XY at 20atm is……? 2) What will happen to a…

A: A question based on phase diagram that is to be accomplished.

Q: At a pressure of 1 atm, kJ of heat are needed to vaporize a 38.7 g sample of liquid benzene at its…

A:

Q: How much heat energy is required to convert 48.1 g of solid ethanol at -114.5 °C to gasesous ethanol…

A: Weight of ethanol = 48.1g Molecular weight of ethanol =  46g/mol Melting point of ethanol = -114.50C…

Q: 2. The heat of vaporization of water at 1000C is 2.26 kJ/g; at 370C it is 2.41kJ/g. a. What is the…

A: Given ∆Hvap at 100°C = 2.26 KJ/g  ∆Hvap at 37°C = 2.41 KJ/g  We have to find standard molar heat of…

Q: Although the H-bonding in hydrogen fluoride is much stronger than that in water yet water has a much…

A: H-bonds and their presence in biological and physical systems play a significant role. For example,…

Q: The heat absorbed by melting a solid is known as latent heat of fusion O latent heat of solid…

A: During the change of physical state of compound , heat is absorbed or release whithoit the change in…

Q: How much heat energy is required to convert 76.9 g of solid ethanol at –114.5 °C to gasesous ethanol…

A: mass of solid ethanol = 76.9 g The molar heat of fusion of ethanol (∆Hf ) = 4.60 kJ/mol Molar heat…

Q: Below is a phase diagram for neon. a. Label each portion correctly with the following terms: vapor,…

A: Neon is a noble gas and its phase diagram is given above.

Q: A type of alloy is a homogeneous solid mixture of metals and melts at a distinct temperature. What…

A: Alloy are the homogeneous mixture of metal - metal or non metal - non metal. Alloy usually have high…

Q: Which of the following properties indicates the presence of strong intermolecular forces in a…

A: Answer - The correct option is (a) Explanation - Intermolecular force - An intermolecular force is…

Q: The phase diagram for elemental sulfur is shown in Figure 6.18. (a) How many allotropes are shown?…

A: The term phase diagram can be defineThe term phase diagram can be defined as the graphical…

Q: Arramge the following substances in order of increasing boiling point: N2, H2, NH3,PH3

A: Ammonia (liquid) has more boiling point than N2, H2, PH3 because it has inter molecular hydrogen…

Q: Chemistry help

A: Clausius Clapeyron equation-This gives relation between pressure and temperature if enthalpy of…

Q: The rate of vaporization increases/decreases with increasing temperature. Explain this phenomenon.…

A: The phenomenon where the molecules goes from its liquid state to the gaseous state is known as…

Q: How much heat is needed to melt 25 g of copper that is at 82.5 ºC?

A: Given data : Mass of copper = 25 g Melting point of copper is 1084°C Specific heat of copper(Cs) is…

Q: Why is the Boiling point of Calcium higher than that of Magnesium?

A: The question is based on the concept of boiling point. it is defined as the temperature at which the…

Q: How much heat energy is required to convert 76.9 g of solid ethanol at –114.5 °C to gasesous ethanol…

A: When there is phase transition taking place then heat energy is calculated using heat of transition…

Q: Which substance has the lower boiling point? Explain.(a) LiCl or HCl (b) NH₃ or PH₃(c) Xe or I₂

A: Boiling point depends on the presence of intermolecular forces of attraction. If the molecule has…

Q: How much heat energy is required to convert 44.9 g of solid ethanol at -114.5 °C to gasesous ethanol…

A: Given,  44.9 g of solid ethanol at -114°C is converted to gaseous ethanol at 160.8 °C  The molar…

Q: What is the pressure in atm of the normal boiling point of C6H6? ____ atmWhat is the pressure in atm…

A: The pressue at the normal boiling point, normal melting point and normal sublimation point is…