What takes more energy: raising water to its boiling point, or making it become water vapor? Why (mention molecular forces)?

Q: 17. Complete the following table: Cl2 HCI Li LicI Substance b.p. -34 °C b.p. -85 °C m.p. 180 °с m.p.…

A: A. Composition type : Cl2 highly covalent. HCl is covalent with 17% ionic character. Li is a metal.…

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

A: Given: The heat of vaporization of water at 25 oC = +43.9 kJ/mol We have to calculate the amount of…

Q: How much heat is needed to boil 785 g of water that is at 17.6 ºC?

A: To find out the total heat required for boiling the 785g water at 17.6-degree centi.... following…

Q: Compar H2O,HF and NH3 ,why H2O is the highest boiling point?

A: Since in all 3 of the species, i.e H2O, HF, and NH3 there is H bonding present Now the specie which…

Q: How much energy is released when 75.3 g of water vapor at 115 degrees C condense and cool to liquid…

A: We know ,energy released HH = m×S× ( tf − ti ) Where H = heat m = mass in gramsS=Specific Heat…

Q: The energy needed to boil the water comes from where?

A: Water exists into three phases. These are ice, liquid water and vapors. To change one phase into…

Q: Applying: Water is liquid at room temperature, the most important reason for this is the? * high…

A: Please find your solution below : Since you have asked multiple question, we will solve the first…

Q: During a phase change, the temperature remains constant although heat is being added. What is the…

A: We give energy to the reactant in the reaction

Q: How do phase changes of water entail the exchange of energy? (In other words, explain latent heat.)

A: Phase changes of water are accompanied by the exchange of latent heat. Even as heat is added or…

Q: How many joules of heat energy are needed to completely change 29.0 g of water to steam at the…

A: The given data contains, mass of water = 29 g.

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: Water can absorb or release large amounts of heat with little change in actual temperature. Why?

A: The specific heat of a substance is the amount of heat needed to raise or lower 1g of the substance…

Q: How many joules of energy are absorbed when 36.2 grams of water is evaporated?  ΔHfus = 6.01 kJ/mol…

A: Heat of vapourization is define as the amount of energy is needed to boil I mole of substance at…

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

A: The amount of heat required to convert a liquid into vapour state is known as enthalpy of…

Q: Using the concept of intermolecular forces, rank the following in order of boiling point from high…

A: The compounds given are HF, CF4, CH2Cl2, AsH3.

Q: Why does water resist changes in temperature?

A: Properties of water: It is known that water is polar in nature because there is a partial positive…

Q: Examine the heating curve for water? Explain the significance of the slopes of each of the three…

A: The heating curve for water can be represented as follows

Q: What happens at the molecular level when water is heated?

A: Introduction: We have to tell what will happen when water is heated.

Q: A 100.0-mL sample of water is heated to its boiling point. How much heat (in kJ) is required to…

A: Density of water = 1.00 g/mL Volume of water = 100 mL Heat of vaporization of water = 40.7 kJ/mol…

Q: Examine the heating curve for water? Explain why the curve has two segments in which heat is added?

A: Water has hydrogens that are directly bonded to the oxygen atom. Water is capable of forming…

Q: Why does an object look like it is bending in water? because water has a high surface tension…

A: Light reflection occurs when something gets in the way of light waves... because the light cannot…

Q: Calculate the total energy, in kilojoules, that is needed to turn a 35 g block of ice at -25 degrees…

A: Here the four steps will be: i) Adddition of heat to take the temperature of ice block from -25oC to…

Q: This topic is about endothermic and exothermic process. Why do you think volatile substances, like…

A: In this question, we want to discuss about cooling effect of volatile substances like acetone and…

Q: Which phrase best describes the vapor point of a substance? O the strength of the bonds between…

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

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: Is the amount of latent heat associated with the process of deposition the same as or less than the…

A: Latent heat can be defined as the heat energy that required to convert a solid into a liquid or…

Q: Which is not true regarding the specific heat of water? The specific heat of water explains…

A: Which statement is not true regarding the specific heat of water?

Q: Is energy (or heat) absorbed or released when vaporizing 50.0 g of water?

A:

Q: Between HI and HF, which has the higher boiling point and why O A. HF, because HF has hydrogen…

A: Between HF and HI , which has higher boiling point:

Q: What is sublimation? Give a common example of sublimation.

A: The most of the substances around us change their state first from solid to liquid and then from…

Q: What is happening to the water molecules at segment F? C A D E G Time Freezing, the water molecules…

A: from C point to G point there is a conversion of vapours to solid.  Let us study each point, one by…

Q: Why is solid carbon dioxide called dry ice? How does it differ from solid water in behavior?

A: regular ice that is solid water is made by simply freezing water at freezing point temperatures.…

Q: Which statement below would be accurate about boiling water?

A: In boiling liquid state of water convert into gaseous state . In liquid state there is greater…

Q: What property of water explain why water the tiny cracks in rocks help the latter break when it…

A: Please find your solution below : Water in the tiny cracks in rocks helps break up the rock when it…

Q: Determine if the following substances, drawn above, are polar or nonpolar, explain the reason for…

A:

Q: Consider two molecular compounds: carbon monoxide (CO) and nitrogen (N2). Which statement below is…

A: Boiling point is the temperature at which vapour pressure of a liquid becomes equal to the…

Q: Composition type (ionic, etc):         Physical state at +200 °C         Physical state at…

A: All non-polar covalent molecules has strong induced dipole- induced dipole interaction if their size…

Q: 3. How much energy would be needed to vaporize 2.8 g of water?

A: nwater = mass/ molar mass = 2.8/18 = 0.155 mol

Q: How many joules of energy must be removed from 152 g of water at 18.5 °C to form ice at 0 °C?

A:

Q: How many joules of energy are absorbed when 36.2 grams of water is evaporated? AHfus = 6.01 kJ/mol…

A: Water has a high heat of vaporization, which is the amount of energy used to convert one gram of…

Q: How much energy would need to be added to 930.g of ice at 0.0°C to turn it into liquid water at…

A:

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

A:

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: How many joules of energy must be removed from 177 g of water at 16.3 °C to form ice at 0 °C?

A: The answer is given as follows

Q: If 85.1 cal of heat are added to 10.0 g of water (specific heat = 4.184 J/g oC) at 30.0 oC, what is…

A: * Heat added = q = 85.1 cal (1 cal = 4.814 J ) q = 85.1 × 4.814 J = 409.67 J * Mass of water = m =…

Q: Rank the elements or compounds in the table below in decreasing order of their boiling points. That…

A: In this question, we will arranged all substances in Decreasing order of their boiling point.  You…

Q: Calculate the total energy, in kilojoules, that is needed to turn a 12 g bloc of ice at -40 degrees…

A: Answer:- This question is answered by using the simple concept of heat energy required to convert…

Q: Using the concept of intermolecular forces, rank the following in order of boiling point from high…

A:

Q: Complete the following table: Substance CH2O b.p. –19 °C CaCl2 m.p. +775 °C Ga m.p. +30 °C…

A: Substance CH2O b.p. –19 °C CaCl2 m.p. +775 °C Ga m.p. +30 °C Xe b.p. –112 °C Composition…