Estimate the boiling point of an unknown substance in deg C if the latent heat of vaporization of the substance is 21.42 kJ/mol and the entropy change for the change in state of the substance from liquid to vapor at its boiling point is 43.30 J/K.mol. Enter your answer in deg C with one decimal place.

Q: (a) If 83.0 g of ice at 0.0oC is placed in 235mL of water at 28.0oC, find the final temperature of…

A:

Q: what is the heat of vaporization of ethanol and dimethyl ether why does on of the  compounds have a…

A: The energy required to transfer a given amount of liquid into a gaseous state is known as the heat…

Q: 30.0 kg of steam at 115°C is cooled down until it becomes ice at -15°C. How many kilojoules of heat…

A: The amount of heat required to increase the temperature of one kilogram of a substance by one degree…

Q: A solid being heated stays at a constant temperatureuntil it is completely melted. What happens to…

A: During melting of solid, heat energy is converted into latent heat required only and temperature of…

Q: what do you think caused the error between your calculated value for the heat of vaporization of…

A: To calculate the combustion enthalpy first the full reaction is to be written C2H5OH + 3O2 ->…

Q: The change in internal energy when 1.0 mol calcite converts to aragonite at a pressure of 1.0 bar is…

A: The enthalpy change can be calculated by using formula ∆H = ∆E + P∆V

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: How much energy is required to melt 882.2 g of methanol at its melting point?

A: The ∆Hfusion of methanol = 3.22 kJ/mol The heat required to melt methanol = Q = N x ∆H Molar mass of…

Q: How many KILOJOULES of heat is required to raise the temperature of the entire 1.0 Kilogram of steam…

A: The amount of heat is required to raise the temperature of the entire 1.0 Kilogram of steam to 110…

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: The normal boiling point of liquid ethanol is 351 K. Assuming that its molar heat of vaporization is…

A: Given,normal boiling point of ethyl acetate is 351 KUnder this conditions atmospheric pressure is 1…

Q: 2 6. Given the phase diagram shown:.. What three letter sequence, from points on the diagram,…

A: In phase diagram, temperature is represented on the x-axis and pressure on the y-axis. Three regions…

Q: a)What is the heat capacity of liquid n-hexane at 48.0C ? b) What is the heat capacity of gaseous…

A:

Q: If 42.15 grams of ice at 0 deg * C was placed in 450 grams of water at 24.2 deg * C and after a…

A: As per the law of conservation of energy, the heat lost by water is equal to the heat gained by Ice.…

Q: Calculate the total AS when 1 mole of ice is heated from -23°C to 27°C. Take the Cp of water and ice…

A: Here we have to determine the entropy change to convert 1mole of water ice at -23°C to water liquid…

Q: How much heat energy is lost when 8.00 moles of solid copper at an initial temperature of 300°C is…

A: The molar mass of copper is:- 64.546g/mol So the mass of 8moles of copper will be 516.368g.

Q: A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 266.0 Torr at 45.0 °C. Calculate…

A: Step 1: An equation describing the mathematical relationship between different temperatures and the…

Q: What is the best explanation that Sfusion is smaller than Svaporization?       Moving from liquid…

A: SECOND LAW OF THERMODYNAMICS states that entropy of the universe always increases. Entropy is the…

Q: Under normal atmospheric pressure, nitrogen boils (and condenses) at -196oC. When 7.7 g of nitrogen…

A: Yes following statement is true . Solution - According to the question - Given - Boiling point of…

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: What force(s) is(are) responsible for the higher heat of vaporization of benzene compared to…

A: Heat of vaporisation is the amount of energy needed to convert the liquid into gas without rising…

Q: true or false The heat of fusion of Au at constant pressure is approximately equal to the heat of…

A: This question is related to the thermodynamics. The given statement is in regard to the relation…

Q: How many KILOJOULES of heat is required to boil the entire 1.0 Kilogram of liquid water?

A: To calculate the heat required to boil liquid water , we would use formula : q = m × ∆Hvap Where , m…

Q: Why does the temperature of a substance not change when the phase changes? 1.) The energy is going…

A: Phase change is a process in which the phase of any substance changes from one phase to another. For…

Q: The heat of fusion for gallium is 5.59 kJimol How much heat in kJ is required to vaporize 55.0 g of…

A:

Q: 6. Heat that causes change in temperature without a change in phase. 7. Heat that causes change in…

A: 6. Heat that causes change in temperature without a change in phase is known as Sensible heat In…

Q: What point where ethanol begins to melt?

A: Melting point of ethanol is -114.1 °C .  The temperature at which any solid begins to melt is known…

Q: latent heat of fusion, why the amount of ice you have will have an impact on the measured latent…

A: Calorimetry is a process of measuring changes in state variable of a body for a purpose of deriving…

Q: The heat of vaporization of CsHs at 1 atm is 94.4 cal/g. 100 g of CeHs reacted at 80.2°C. Calculate…

A: This question is related to finding out the thermodynamic parameters. Heat of vaporization is the…

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

A: Answer

Q: Calculate the higher heating value of liquid octane.

A:

Q: How much energy in units of J, is required to heat 71.7g of solid acetone from -156.3°C to -96.6°C.…

A:

Q: Calculate the total enthalpy in kJ of a 0.749 g sample of steam at 100oC going through various phase…

A:

Q: Calculate the total heat required in the heating and complete melting of 1.00 mol solid Cu (MM =…

A: The mass of copper is = 1.00 mol The initial temperature of copper is = 100.0oC The final…

Q: Question 9. Suppose a small decorative piece of ice (system) at a temperature of 0°C and weighing…

A: Given , mass of ice = 180.2 gtemperature of surrounding = 25°Cinitial temperature OF system  = 0°C

Q: 1.8 moles of a molecule that has hydrogen bonding are placed in a flask.  The enthalpy of fusion is…

A: Step 1:

Q: **The specific of liquid water is 4.184 Joules/g-°C and has a molar heat of vaporization equal to…

A: Given : mass of water = 1 g             ∆Hvap = 40.7 kj             Cs = 4.184 j/g°C

Q: Ice at -4.80oC is added to 220g of water at 26.60oC. What is the mass of ice needed to cool the…

A: Mass of water = Mw = 220 gMass of ice = to be determined Initial Temperature of water = Tw =…

Q: Under normal atmospheric pressure, nitrogen boils (and condenses) at -196oC. When 7.7 g of nitrogen…

A:

Q: Which of the following compounds has the lowest water solubility? ОН Compound A Compound B Compound…

A:

Q: How much energy is necessary to vaporize 22.4 g of NH,(/) (boiling point = -33.4 °C) that is…

A: