AHvap 59 AHus 40.7 40.5 34.1 29 23.4 7.3 10.0 6.02 8.9 5.0 6.3 1.3 0.94 Mercury (Hg) Water Methane Diethyl ether Benzene (CH) (C,H,0C,H5) (CgHg) Ethanol Argon (Ar) (C,H,OH) (H2O) AH° (kJ/mol)

Q: how many kJ of energy are needed to change 20.8 g of ice at 0.00 °C to water at 20.31°C? use heat of…

A:

Q: In the pairs of compounds listed, which option has the lower vapor pressure listed first? O PH3, NH3…

A: Vapour pressure is defined as the pressure exerted by the vapours over the surface of the condensed…

Q: What kind of intermolecular forces act between a formaldehyde (H2CO) molecule and a hydrogen…

A: 1- We know that, London dispersion forces aee acting in all the molecules ( Polar and nonpolar…

Q: Compound Melting point ("C) AHs (kJ/mol) Boiling point ("C) AHp (kJ/mol) HF -83.11 4.577 19.54 25.18…

A: Answer: Entropy is the measure of the system's disorderliness or randomness. In more possible…

Q: What is the quantity of heat (in kJ) associated with cooling 121.1 g of water from 25.60 °C to ice…

A: we have to calculate the heat associated with cooling of water

Q: The heat required to melt a substance is called the Enthalpy of Fusion. The enthalpy of fusion of a…

A: We know that Heat of fusion (Qfus. ) = n × ∆H°fus. Heat of vapourisation (Qvap. ) = n × ∆H°vap.…

Q: An unknown liquid has a vapor pressure of 88 mmHg at 45°C and 39 mmHg at 25°C. What is its heat of…

A: Introduction: This is an example of liquid-vapor equilibrium. Therefore, the Clausius-Clapayron…

Q: How much heat is required to melt 23.9 g of solid diethylether (at its melting point)?

A:

Q: at 85°C? 1:

A: Since you have asked multiple question, we will solve the first question for you.If you want any…

Q: Use the following vapor pressure data to answer the questions: A B Liquid C₂H16 CgHyNHz Vapor…

A:

Q: A certain substance has a heat of vaporization of 34.16 kJ/mol. At what Kelvin temperature will the…

A: Solution : Clausius-Clapeyron equation states the relationship between temperature and vapor…

Q: Which liquid is more viscous at room temperature,water or molasses? Explain.

A: Viscosity means the internal resistance between the layer of the liquids. The higher the resistance…

Q: Calculate the grams of solute in each of the following solutions: (а) 1.0 L of 12 М H-SO4 g H2SO4 х…

A: Given information: Volume of H2SO4 = 1.0 L Molarity of H2SO4 = 12 M Volume of KMnO4 = 75.9 mL…

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: Adding 0 0C ice is more effective to decrease the temperature of wine than adding 0 0C water! Do you…

A: Q.1) 0°C ice is more effective than 0°C water in cooling wine. Q.2) The heat of vaporization of…

Q: The vapor pressure of ethanol is 400.0 mm Hg at 63.5oC (336.65K).  Its molar heat of vaporization is…

A:

Q: )   Does antifreeze ingredient ethylene glycol (HOCH2CH2OH; MM = 62.07 g/mol) have a lower or higher…

A: Intermolecular forces are the attractive or repulsive forces that exist between molecules or atoms…

Q: 19. lodine has mp=113.7.C and bp=184.4-C. What, if any, phase changes take following conditions at…

A: Melting point: The temperature at which solid state converts to liquid state is called melting…

Q: A material has a heat of fusion of 3.5 kJ/mol and a heat of deposition of -28.3 kJ/mol. The molar…

A: Given : Heat of deposition i.e ΔHdep = -28.3 KJ/mol. Molar mass of material = 105.9 g/mol. Heat of…

Q: how much energy is (kcal) is required to melt 77g of ice at (0.0C) to liquid?

A: Given: The mass of ice=77 g  Tempearature=0 °C The heat of fusion for water  =333.6 J/g

Q: How much heat in kJ is required to transform a 500-g ice at-15°C into tiquid water at 55°C? (Express…

A:

Q: The heat of fusion of a certain material is 3.5 kJ/mol and its heat of deposition (gas to solid) is…

A: The amount of the material is = 5.78 g The heat of fusion of this material is = 3.5 kJ/mol The heat…

Q: What equation is used to calculate the heat needed to melt a solid? heat = m x SH x AT O heat = m x…

A: Solid melted is related to heat of Fusion.

Q: Which statement is not true about intermolecular forces? A) Small molecules are more polarizable…

A: Explanation to the correct option is given below

Q: portuhitles for hydrogen bonding to (D) Heptane has a carbon chain that is further apart making it…

A: SINCE YOU HAVE ASKED A QUESTION WITH A MULTIPLE SUBPART WE WILL SOLVE THE FIRST THREE SUBPARTS FOR…

Q: can NaHCO3 posses hydrogen bonding, dipole-dipole forces, and ionic intermolecular attractions?

A: The structure of ionic compound NaHCO3 is as shown below.

Q: Use the following vapor pressure data to answer the questions: A B Liquid CH3COOC₂H5 C2H5NH2 Vapor…

A: Given that, We have to answer the following questions

Q: VOICT Une of the following correctly ranks the compounds in order of lowest enthalpy of vaporization…

A: Generally vanderwalls force, H bonding, dipole dipole interaction etc type forces dictates enthalpy…

Q: (a) What phase change is represented by the “heat of fusion”of a substance? (b) Is the heat of…

A: a) Since fusion is the process where solid is converted into the liquid  hence the phase change…

Q: A compound's melting point is 16.2 °C. Its molar mass is 84.4 g and its heat of fusion is 6.12…

A: The amount of heat required to melt a substance at its melting point is known as the heat of fusion.…

Q: Difluoroethene has two isomers with very different properties despite having the same chemical…

A: Given that:Enthalpy of vaporization = 21.4 KJ/molNormal boiling point = -28oC = -28 + 273.15 =…

Q: List the following compounds in the order of increasing melting points.  LiF, NaCl, CaO Justify your…

A: A question based on melting point, which is to be accomplished.

Q: Use the below heating curve for compound ZYX to determine the specific heat capacity of the liquid.…

A:

Q: What is the strongest interparticle force in each substance?(a) H₃PO₄(b) SO₂(c) MgCl₂

A: Intermolecular forces are the attraction forces that exist between the neighbouing species.

Q: Part A) What is the relationship between the intermolecular forces in a liquid and its vapor…

A: Intermolecular force plays an important role in determining physical properties such as vapor…

Q: Vanadyl trichloride (VOCI3) is a liquid that is used as a catalyst in the manufacturing of…

A: The mass of vanadyl trichloride is = 37.84 g The molar mass of vanadyl trichloride is = 173.3 g/mol…

Q: Please help me solve the following question, explain it and pls pls make sure its correct, thanks !!

A: Carbon (C) forms an atomic solid, specifically a network solid, where the atoms are held together by…

Q: = What is the vapor pressure of Cu at 2633.8 K if its heat of vaporization and boiling point are…

A: We will use the clausius-clapeyron equation.

Q: Rank boiling point from highest (1) to lowest (3) Rank melting point from highest (1) to lowest (3)…

A: above given question solution is given below table;

Q: Use the following vapor pressure data to answer the questions: A B Liquid CH 31 CH3COOC₂H5 Vapor…

A: The vapor pressure of a liquid is directly related to the intermolecular forces .  The stronger…

Q: The standard Enthalpy (AH•) of AgCl(s) is 296.0 J/mol . How much heat is needed to melt 18.3 g AgC?…

A: The given data: ΔH° (AgCl)  = 296.0 J/mol The mass of AgCl = 18.3 g To determine = The amount of…

Q: (1) In which liquid are the intermolecular attractive forces the weakest ? (2) Which liquid would be…

A: We are given two compounds and we have to compare there intermolecular forces and vapour pressure

Q: Methane (CH4) is a gas, but carbon tetrachloride (CC14) is a liquid at room temperature and standard…

A: The best explanation for the difference in physical state between methane (CH4) and carbon…

Q: 18. Calculate the amount of heat required to melt 27.9 g of a compound at its melting point.  The…

A:

Q: The heat of fusion of heptane (C7H16) at its normal melting point of -91°C is 14.0 kJ/mol, while its…

A: (a) Solution - According to the question - Given -  DHfus = 14.0 kj/mol DHvap = 31.9 kj/mol Formulas…

Crystal Structures

Solids are present all around us. They have different properties and applications. Diamond and graphite are two well-known solids. Diamond is the hardest material in the world and is used in making jewelry. Graphite on the other hand is soft. The lead of your pencil is graphite. Why are they so different in appearance and properties despite the fact they are chemically the same? Both are allotropes of carbon. The answer lies in the structure, the way constituent particles are arranged in the solids.