The heat of vaporization AH, of heptane (C₂H₁6) is 31.2 kJ/mol. Calculate the change in entropy AS when 26. g of heptane condenses at 98.4 °C. Be sure your answer contains a unit symbol and the correct number of significant digits. 0 ☐ μ x10 ロ・ロ 00

The heat of vaporization AH, of heptane (C₂H₁6) is 31.2 kJ/mol. Calculate the change in entropy AS when 26. g of heptane condenses at 98.4 °C. Be sure your answer contains a unit symbol and the correct number of significant digits. 0 ☐ μ x10 ロ・ロ 00

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Q: In a constant‑pressure calorimeter, 65.0 mL of 0.350 M Ba(OH)2 was added to 65.0 mL of 0.700 M HCl.…

A: Given:65.0 mL of 0.350 M Ba(OH)265.0 mL of 0.700 M HCl.Ba(OH)2 + 2 HCl → BaCl2 + 2 H2O

Q: 18) The combustion of titanium with oxygen produces titanium dioxide. Ti (s) + O₂ (g) → TiO₂ (s)…

Q: Mothballs are composed primarily of the hydrocarbon naphthalene (C10H8). When 1.025 g of naphthalene…

A: Given data,Mass of naphthalene=1.025gInitial temperature=24.25oCFinal…

Q: The addition of 1.250 g of zinc metal (65.38 g/mol) to 0.100 L of 0.1912 M HCl in a coffee-cup…

A: Mass of zinc = 1.250gMolarity of HCl= 0.1912MVolume of HCl = 0.1LTemperature difference =…

Q: A 5.00 grams of LiOH is dissolved in 100.0 grams of water in a perfect calorimeter. Calculate the…

A: Given data, Mass of LiOH = 5.00 g Mass of water = 100.0 g LiOH(s) --> Li+(aq) + OH-(aq) , ∆H…

Q: When a 2.88 g sample of solid ammonium nitrate dissolves in 60.0 g of water in a coffee cup…

Q: When 10.0 mL 0.100 M NaOH and 5.00 mL 0.200 M HCl were mixed in a coffee-cup calorimeter (heat…

Q: plant use photosynthesis to produce glucose light energy+ 6CO2 + 6H2O = C6H12O6 + 6O2 if a leaf…

Q: When 5.40 g of a solid mixture composed of NH4Cl and CaCl2 was dissolved in 100.0 mL of water, the…

A: Given Mass of NH4Cl = 1.78 g Mass of CaCl2 = 3.26 g

Q: Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics…

A: ΔHcomb = Ccalorimeter ΔT nNote : this formula is used in order to maintain the consistency of the…

Q: Calculate ΔSsurr at the indicated temperature for a reaction having each of the following changes in…

A: Calculate the ΔSsurr at the indicated temperature for a reaction having each of the following…

Q: Zinc metal reacts with HCI according to the following balanced equation: Zn(s) + 2HCI(aq) -->…

A: Given : volume = 47.0 ml density = 1.03 g / ml specific heat = 4.184J /g°c temperature change of…

Q: What will be the final temperature of a 418−g sample of water, initially at 15.0 °C, after 61.7 kJ…

Q: 50.0 mL of 1.00 M HCl(aq) and 100.0 mL of 1.00 M NaOH(aq), both at 25.0oC, are added together in a…

A: Total volume of the solution, (V) = (50 + 100) mL = 150 mL. The density of the solution, d = 1 g/mL.…

Q: Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics…

A: heat of combustion is the heat released during combustion process

Q: hthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics…

Q: reaction

A: Dear student this question is related to enthalpy change.

Q: Find ΔcH for the combustion of a new type of fuel (M = 46.07 g mol-1) from the following data:The…

A: The objective of the question is to calculate the enthalpy change (ΔcH) for the combustion of a new…

Q: Sodium hydroxide (39.9971 g/mol) reacts with excess H2SO4 in a constant-pressure calorimeter. The…

A: Given ∆T = 29°CMass of reaction mixture = M = 120 gSpecific heat of solution = Cs = 4.184 J/g°CHeat…

Q: 4. Find the standard molar enthalpy for the reaction Cos+ ½ Oxg}→ COe Co+ Oz→ C0xg AH = -394 kJ CO2…

A: Given: (i) C(s) + ½ O2(g) → CO(g) ; ΔH°(i) (ii) C(s) + O2(g) → CO2(g)…

Q: A calorimeter contains 25.0 mLmL of water at 12.5 ∘C∘C . When 1.70 gg of XX (a substance with a…

Q: When 2.25 g of sodium hydroxide (NaOH) was dissolved in 100.00 g of water a value of 10.00oC was…

A: The heat of the solution produced when 2.25 g of sodium hydroxide is dissolved in 100 g of water, is…

Q: Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics…

A: Heat absorbed by calorimeter=Ccaloimeter(Tf-Ti)Molar mass of dimethylphthalate (C10H10O4)=191.184…

Q: A critical reaction in the production of energy to do work or drive chemical reactions in biological…

A: ∆Grxn = - 50.1 kJ/mol

Q: What is the value of ΔHrxn if the reaction below is reversed? In other words, PCl5 becomes the…

A: If we reverse the chemical reaction than we also reverse the sign of enthalpy change

Q: The addition of 1.250 g of zinc metal (65.38 g/mol) to 0.100 L of 0.1912 M HCl in a coffee-cup…

A: The mass of solution is first determined using density and volume values as follows,

Q: Which of the following statements are true about the exothermic reaction H2(g)+12O2(g)→H2O(l) ?…

A: A chemical process in which heat is released into its surroundings is called an exothermic reaction.…

Q: A system does 506 kJ of work and loses 271 kJ of heat to the surroundings. What is the change in…

A: Please find your solution below : According to First Law of Thermodynamics, heat can neither we…

Q: Assume 1) that no heat is lost to the calorimeter or the surroundings, and 2) that the density and…

Q: Find the standard molar enthalpy for the reaction C(s) + ½ O2(g) → CO(g) C(s) + O2(g) → CO2(g) ∆Ho =…

A: Given in the question : C(s) + O2(g) → CO2(g) ; ∆Ho = -394 kJ CO2(g) → CO(g) + ½ O2(g) ; ∆Ho = +283…

Q: Find ΔcH for the combustion of ethanol (C2H6O) to carbon dioxide and liquid water from the following…

Q: ☐ x10 μ The heat of vaporization AH, of ethanol (CH3CH2OH) is 38.6 kJ/mol. Calculate the change in…

A: First, we need to convert the given values to appropriate units for the calculation. The heat of…

Q: A system does 551 kJ of work and loses 216 kJ of heat to the surroundings. What is the change in…

A: Given Data : 1. Work done (W) = -551KJ 2. Heat to the surroundings (Q) = -216 KJ Work done by the…

Q: (aq) UH (aq) You can make any reasonable assumptions about the physical properties of the solution.…

Q: The standard enthalpy change for the combustion of 1 mole of propane is –2043.0 kJ. C3H8(g)…

Q: For the reaction: CCl4(g) → C(s) + 2 Cl2(g) ΔH∘∘ = +95.7 kJ and ΔS∘∘ = +142.2 J/K The…

A: The question is based on the concept of chemical thermodynamics. We have to identify the nature of…

Q: Mg(s) + 1/2 O2(g) -> MgO(s). Determind the value of the standard enthalphy change for the reaction.…

A: Please find the solution attached.

Q: ormation you need from the ALEKS Data resource, to answer ti =q) + Cl¯ (aq) able assumptions about…

A: According to the question, a student dissolves 11.7 g of sodium chloride (NaCl) in 250 g of water in…

Q: Consider the following reaction at 25 °C: 3 NiO(s) + 2 NH3(g) → 3 Ni(s) + N2(g) + 3 H20(g) If AG° =…

Q: 59.8 J was required to raise the temperature of 25.0 g of ethylene glycol by 1.00 K. Calculate the…

Q: A critical reaction in the production of energy to do work or drive chemical reactions in biological…

A: ΔG°rxn = −30.5 kJ/mol T = 37.0 °C and pH = 7.0 [ATP] = 5.0 mM [ADP] = 0.50 mM and [HPO42-] = 5.0 mM…

Q: Use the standard reaction enthalpies given below to determine Hᵒrxn for the following reaction:…

A: Given, N2(g) + O2(g) --------> 2NO(g) ∆H°rxn= +183 kJ 1/2 N2(g) + O2(g) -------> NO2(g)…

Q: Photochemical smog is formed through a sequence of reactions, the first of which is N2(g) + O2(g) ⟶…

Q: 100. mL of 0.100M Ca(OH)2(aq) at 25.0 °C is combined with 100. mL of 0.100M HCl(aq) at 25.0 °C in a…

Q: Consider the following reaction at 25 °C: 3 Ni(s) + N₂(g) + 3 H₂O(g) → 3 NiO(s) + 2 NH3(g) If AG° =…

Q: Assuming that the specific heat of the solution is 4.18 J/(g⋅∘C)J/(g⋅∘C) and that the calorimeter…

Question

The heat of vaporization AH, of heptane (C₂H₁6) is 31.2 kJ/mol. Calculate the change in entropy AS when 26. g of heptane condenses at 98.4 °C.
Be sure your answer contains a unit symbol and the correct number of significant digits.
0
μ
3
X
S
?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

3- Diethyl ether (CH3CH2OCH2CH3) was one of the first chemicals used as an anesthetic. At 34.6°C, diethyl ether has a vapor pressure of 760. torr, and at 17.9°C, it has a vapor pressure of 400 torr. What is the ΔH of vaporization for diethyl ether?
3 If we measure the heat change (q) of everything in a system except the calorimeter, we can use the first law of thermodynamics (∆Euniverse = 0) to calculate the heat change of the calorimeter (qcal). In this reaction, we combine 5.75 g of 67.4 ºC water with 6.67 g of 19 ºC water in a calorimeter. Since some of the heat is absorbed by the calorimeter, the final temperature of the water is 25.4ºC. Since the hot and cold water are combined, the final temp of the water is the final temp for the hot water and the cold water. Calculate the heat change of the calorimeter in J. Remember that all of the heat changes must add up to zero so you can calculate the heat change of the hot water (qhotwater) and the heat change of the cold water (qcoldwater) using for each where Cs = 4.186 J/gºC. The first law of thermodynamics tells us that all of these changes sum up to zero so Enter your answer to one decimal place (tenths)
Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics in humans. The value of ΔHcomb for dimethylphthalate (C10H10O4) is –4685 kJ/mol. Assume 0.910 g of dimethylphthalate is combusted in a calorimeter whose heat capacity (Ccalorimeter) is 7.40 kJ/°C at 22.0 °C. What is the final temperature of the calorimeter? °C
A quantity of 2.00×102 mL of 0.786 M HCl is mixed with 2.00×102 mL of 0.393 M Ba(OH)2 in a constant-pressure calorimeter of negligible heat capacity. The initial temperature of the HCl and Ba(OH)2 solutions is the same at 20.76°C. For the process below, the heat of neutralization is −56.2 kJ/mol. What is the final temperature of the mixed solutions? H+(aq) + OH−(aq)→H2O(l) _____°C
A system does 516516 kJ of work and loses 236236 kJ of heat to the surroundings. What is the change in internal energy, Δ?Δ�, of the system? Note that internal energy is symbolized as Δ?Δ� in some sources.
A bomb calorimeter has a heat capacity of 4.66 kJ/°C. When 1.772 g of glucose, C6H₁2O6(s), is combusted in the bomb calorimeter, the temperature of the calorimeter and its contents increased from 22.32 °C to 28.24 °C. Calculate the change in internal energy, AU, for the combustion of 1.772 g of glucose in the bomb calorimeter. AU = -716.36 kJ
Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics in humans. The value of ΔHcomb for dimethylphthalate (C10H10O4) is –4685 kJ/mol. Assume 1.16 g of dimethylphthalate is combusted in a calorimeter whose heat capacity (Ccalorimeter) is 7.85 kJ/°C at 20.0 °C. What is the final temperature of the calorimeter?
55. Does the standard enthalpy of formation of H2O(g) differ from ΔH° for the reaction 2H2(g)+O2(g)⟶2H2O(g)?
If a system has 5.00×102 kcal5.00×102 kcal of work done to it, and releases 5.00×102 kJ5.00×102 kJ of heat into its surroundings, what is the change in internal energy (Δ? or Δ?)(ΔE or ΔU) of the system?
A 0.588 g sample of liquid C5H12 was combusted using excess oxygen gas inside a bomb calorimeter, with the products being carbon dioxide gas and liquid water. The calorimeter's heat capacity is 4.706 kJ °C-1. If the temperature inside the calorimeter increased from 25.0 °C to 29.9 °C, determine ΔrU for this reaction in kJ mol-1 (with respect to C5H12). Do not worry about how realistic the final answer is. Express answer in 2 significant figures.
what is the value of ΔHrxn if the reaction below is reversed? In other words, PCl5 becomes the reactant. Report your answer in kJ to 1 decimal place. PCl3(g) + Cl2(g) → PCl5(g); ΔHrxn = 618.7 kJ
Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics in humans. The value of ΔHcomb for dimethylphthalate (C10H10O4) is –4685 kJ/mol. Assume 1.01 g of dimethylphthalate is combusted in a calorimeter whose heat capacity (Ccalorimeter) is 6.95 kJ/°C at 20.5 °C. What is the final temperature of the calorimeter?