25. According to the heating curve above, what letter represents consensation? 26. According to the heating curve above, what letter represents freezing? 27. According to the heating curve above, what letter represents the solid phas.

Q: What is Latent Heat of Fusion and Latent Heat of Evaporation? 15. Mention some uses of these topics…

A:

Q: 0.5000 moles of steam at 200°C was chilled in a ultra-low temperature freezer to -90°C. If the heat…

A: It is given that steam is chilled from an initial temperature of 200°C to the ice at -90°C,

Q: What is the heat of vaporization for a liquid and why is it useful?

A: The vaporization is the transition process where liquid converted to vapor phase. The heat of…

Q: 56. This statement is correct regarding the relationship of vapor pressure with boiling point. *

A: Two multiple choice questions are given here.  The first question deals with the relation of boiling…

Q: The melting points for three substances are shown below. Explain the trend using your knowledge of…

A: We will write the required information

Q: How many joules of heat are absorbed then ice is heated from -15.6 °C to -1°C, the specific heat of…

A: Given Mass = 15.1 g Specific heat = 2.10 J/g-°C Temperature change = -15.6°C to -1°C

Q: What is super cooled liquid? Give example

A: The process of chilling a liquid below its freezing point without allowing it to become solid is…

Q: Which portion of this heating curve for water should have the least steep slope?

A: Heat capacity is defined as the amount of heat required to raise the temperature by 1 degree…

Q: The word latent means “hidden”, “unseen”. Which one of the following statements best explains why…

A: The energy is always absorbed during a phase transition. The energy required to melt a solid is…

Q: How much heat is needed to melt 75.0 g of ice that is at -28.0ºC?

A: We have given that Mass of ice = m =75 grams T1 = -28°C T2 = 0°C ∆T = T2  - T1 = 0  -  (-28) = 28°C…

Q: How much heat is required to convert 135 g of ice at -15 °C into water vapor at 120 °C?

A: Given,  Mass of ice = 135 g  Initial temperature = Tinitial = -15 0C  Final temperature = Tfinal =…

Q: 440.0 grams of ice are at-50.0 degrees C, and are heated to 22.0 degrees. How much heat is absorbed…

A: The specific heat is the amount of heat per unit mass required to raise the temperature by one…

Q: How much heat is required to melt 175g of ice at 0℃? Hf = 334 J/g ; Hv = 2260 J/g

A:

Q: The heat of fusion of water is 79.9 Cal/G. How much heat would be required to melt 75.9 G of ice?

A: Given: Mass of ice, m =75.9  g The heat of fusion of water =79.9 Cal/g

Q: Consider the heating curve provided for 1.00 mole of a substance that begins as a solid at -14.8 °C…

A: The heat capacity is the ratio of the energy supplied in the form of heat to the rise in the…

Q: 72.3 g of ice at -15.0°C has heat energy added to it until it becomes steam at 145°C. Calculate the…

A:

Q: What is quantity of heat (in KJ) associated with cooling 212.7 g of water from 25.60 C to ice at…

A:

Q: How much heat is required to convert ice with a mass of 1.0 kg at an initial temperature of -25.0 °C…

A:

Q: A 43.70 g sample of solid magnesium is initially at 632.00°C. If the sample is heated at constant…

A: Required information: Specific heat capacity of Mg = 1.020Jg°C Formula used:…

Q: Consider the heating curve provided for 1.00 mole of a substance that begins as a solid at -14.8 °C…

A: Solution From the heating curve, it is clear that the substance is solid at   and the melting point…

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: 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: 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: A 37.0 g sample of ice is held at -12.0 °C. If the ice absorbs 25800 J of heat, what state and…

A: We can determine the final state of the water from the final temperature.  The formula is : q = m ×…

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: 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: How much energy is required to change 2 kg of water from ice at -10 °C to steam at 250 °C?

A: Entire process involved five stages. The energy required for each stage is to be calculated. Mass of…

Q: How much heat is required to turn a 1 kg cube of ice at -10°C to steam at 110°C?

A: The heat is consumed in the following ways: 1. Heat required to convert 1 kg (1000 g) ice at -10°C…

Q: How much heat is necessary to change 565 g of ice at -5°C to water at 20°C?

A: Given,Mass of ice = 565g.Initial temperature = -50C.Final temperature = 200C.

Q: How much heat is required to convert 55.0g of liquid water at 22.0°C to steam at 105°C?

A:

Q: A 193.1 g sample of water at 21.2°C is heated to steam at 131.5°C. How much heat was absorbed?

A:

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: How much heat is required to change 600. g of liquid mercury to gaseous merouty at the boiling?

A: To calculate the heat required to change the liquid mercury to gaseous mercury at its boiling…

Q: Why does steam at 100 °C cause a more severe burn than liquid water at 100 °C?

A: The state of matter in which the chemical and physical properties are uniform throughout is known as…

Q: 20.0g of ice at 0.0C is turned into steam, how much energy (in kJ) is required?

A: Ice conversion into liquid water and steam requires 3 energies -  Heat to melt the ice  Heat to…

Q: Determine the enthalpy of vaporization for this substance. ΔHvap =

A: The gradient of the line lnP vs 1/T graph gives the value of ∆Hvap.

Q: G B A Energy 25. According to the heating curve above, what letter represents consensation? 26.…

A: Condensation is the process of transformation of physical state of matter from gas phase to the…

Q: When 30 kJ of heat is removed from 1400g of ice initially at -10oC, its temperature becomes

A: 30KJ heat is removed from the ice. So it will have a negative sign. So we will consider the heat…

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: The heat of fusion of pure silicon is 43.4 kJ/mol. How much energy would be needed to melt a 5.24-g…

A:

Q: Consider the heating curve provided for 1.00 mole of a substance that begins as a solid at -14.8 °C…

A: Answer -  The substance is solid at   and the melting point of the substance is  . The substance…

Q: 3. Calculate the amount of heat (in kJ) required to convert 827.0 g of ice at -17°C to steam at…

A: Mass of ice = 827.0 g

Q: How much heat is required to vaporize 35.8 gg of water at 100 ∘C∘C? (ΔHvap(H2O)=40.7kJ/mol

A: The amount of energy required to vaporize water to vapor is defined as latent heat of vaporization.…

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: How many joules of heat are absorbed then ice is heated from -15.6 °C to -1°C, the specific heat of…

A: In this question, we will determine the value of heat in J unit absorbs by ice. How we can…

Q: How much heat is required to raise the temperature of 4.5g of ice from -15.0ºC to 106ºC?

A:

Q: Suppose 1 g of water at 10 °C was heated and there are no heat lost in the surroundings. How much…

A: From given data m = 1 g  T1 =10°C =283 K T2 = 110°C= 383K Furthermore, specific heat capacity of…

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: How much heat is needed to melt 564 g of silver that is at 32.3 C?

A:

Micelles and Biological Membrane

Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hydrophilic regions. In micelles, polar head groups (hydrophilic groups) produce an outer layer associated with water whereas nonpolar tails (hydrophobic groups) are organized in the interior.