A mass of 31.5 g of H20(g) at 373 K is allowed to flow into 279 g of H20(1) at 298 K and 1 atmPart ACalculate the final temperature of the system once equilibrium has been reached. Assume that Cp m for H,O is constant at its values for 298 K (75.3 J. mol1.K 1) throughout the temperature range of interest AHyan for water is 40650J. mol 1Express the temperature in kelvins to three significant figures.T = KSubmitRequest Answer

In case of mixing of two liquids at different temperature, the final temperature of final solution…

A mass of 31.5 g of H20(g) at 373 Kis allowed to flow into 279 g of H2O(1) at 298 K and 1 atm Part A Cem for H,O is constant at its values for 298 K (75.3 J. mol 1. K 1) throughout the temperature range of interest AHan for water is 40650 Calculate the final temperature of the system once equilibrium has been reached. Assume J. mol 1 Express the temperature in kelvins to three significant figures. T = K Submit Reguest Answer

A mass of 31.5 g of H20(g) at 373 Kis allowed to flow into 279 g of H2O(1) at 298 K and 1 atm Part A Cem for H,O is constant at its values for 298 K (75.3 J. mol 1. K 1) throughout the temperature range of interest AHan for water is 40650 Calculate the final temperature of the system once equilibrium has been reached. Assume J. mol 1 Express the temperature in kelvins to three significant figures. T = K Submit Reguest Answer

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter2: The First Law Of Thermodynamics

Section: Chapter Questions

Problem 2.32E: Many compressed gases come in large,heavy metal cylindersthat are so heavy that they need a special...

See similar textbooks

Similar questions

During the industrial synthesis of methanol (CH3OH), carbon monoxide (CO) reactswith hydrogen gas. For methanol, ΔH= -100.4 kJ/mol. a) Is it preferable to maintain this system at high or low pressure? Explain.
Consider the following reaction: H2(g) + ½ O2 (g) ------> H2O (g) The standard enthalpy of formation of gaseous H2O at 298 K is -241.82 kJ mol-1. Calculate the value at 153 0C. Given Cp,m for H2O(g): 33.58 kJ mol-1; H2 (g): 28.84 kJ mol-1; O2 (g): 29.37 kJ mol-1. Assume heat capacities are independent of T. NOTE:answer in kilojoules per mole (kJ/mol)
A sample of K(s) of mass 3.226 gg undergoes combustion in a constant volume calorimeter at 298.15 K. The calorimeter constant is 1849 J⋅K−Mol-, and the measured temperature rise in the inner water bath containing 1538 gg of water is 1.776 K. CP,m(H2O,l)=75.3J⋅mol−1⋅K−1CP,m(H2O,l)=75.3J⋅mol−1⋅K−1. 1) Calculate ΔU��f for K2O 2) Calculate ΔH∘f for K2O
1. A certain ideal gas whose R = 278.6 J/kg.K and cp =1.015 kJ/kg.K expands isentropically from 1517 kPa, 288°6 to 965 kPa. For 454 g/s of this gas determine, (a) Wn, (b) V2, (c) ΔU and (d) ΔH
Calculate △U and △H for the transformation of one mole of a ideal gas from 27°C and 1atm to 327°C and 17atm. Cp=(20.9 + 0.042T) J/Kmol. Provide the given, asked, formula/s to be used and solution.
When 2.0 mol of CO2 is heated at a constant pressure of 1.25 atm, its temperature increases from 280.00 K to 307.00 K. The heat (q) absorbed during this process is determined to be 2.0 kJ. Calculate (a) ΔH for this process (b) The molar heat capacity of CO2 at constant pressure (CP,m) (Hint: you can assume that CP,m is constant over this temperature range and that the CO2 behaves ideally). (c) ΔU.
To a test tube containing 10.0 ml of 0.50 M HCl solution in a calorimeter, 0.05482 g of solid MgO (MW = 40.30 g/mol) at the same temperature was added. A change in temperature of 6.2°C was recorded. In a separate experiment, the heat capacity of the calorimeter was determined to be 0.293 kJ/°C. 1. Calculate the experimental ΔHrxn (in kJ/mol) for the reaction between MgO andHCl.2. If the theoretical ΔHrxn of the reaction between MgO and HCl is -1349 kJ/mol, calculate the %error.
4. A sample consisting of 150 g of CO molecules at 300 K is expanded isothermally from an initial pressure of 5.0 bar to a final pressure of 2.0 bar. Calculate q, w, ∆U, ∆H, ∆Ssys, ∆Ssurr, and ∆Stotal for the process two ways: (a) reversibly and (b) irreversibly against a constant pressure of 2.0 bar. Cp,m is constant at a value of 29.14 J/mol* K, and temperature of the surroundings is 273 K. State whether each process is spontaneous.
2.8 g of a solid was dissolved in 51.4 g of a basic solution in a calorimeter with a calorimeter constant of 37.0 J K–1 with all substances initially at 81.5 °C.The resulting solution was observed to be at a temperature of 59.8 °C and have a heat capacity of 3.81 J g–1 K–1.Determine q for the dissolution process.
A student poured 100 ml of water (density = 1.00 g / mL) into a coffee calorimeter, noted that the temperature of the water was 18.8oC, then added 5.33 g KOH. With the lid on, the mixture was stirred, temperature increased and the maximum temperature reached at the time of mixing 31.6 oC. Calculate the heat of the system in this dissolution reaction (qsys). ( Approximate the specific heat capacity, cp as 4.18 J g-1 K-1. Do not consider the contribution to the heat generated from the calorimeter; assume that this is zero. Only calculate the heat from the heat capacity of the solution. make sure you consider the sign of qsys qsys for dissolution of KOH = J
A 84.8-g piece of silver (s = 0.237 J/(g ∙ °C)), initially at 268.0°C, is added to 128.4 gof a liquid, initially at 24.9°C, in an insulated container. The final temperature of themetal–liquid mixture at equilibrium is 39.6°C. What is the identity of theliquid? Neglect the heat capacity of the container.a. methanol (s = 2.53 J/(g ∙ °C))b. ethanol (s = 2.43 J/(g ∙ °C))c. hexane (s = 2.27 J/(g ∙ °C))d. water (s = 4.18 J/(g ∙ °C))e. acetone (s = 2.15 J/(g ∙ °C))
Limestone stalactites and stalagmites are formed in caves by the following reaction:Ca2+(aq)+2HCO−3(aq)→CaCO3(s)+CO2(g)+H2O(l)Ca2+(aq)+2HCO3−(aq)→CaCO3(s)+CO2(g)+H2O(l)If 1 molmol of CaCO3CaCO3 forms at 298 KK under 1 atmatm pressure, the reaction performs 2.47 kJkJ of P−VP−V work, pushing back the atmosphere as the gaseous CO2CO2 forms. At the same time, 38.75 kJkJ of heat is absorbed from the environment. What is the value of ΔHΔH for this reaction? Express your answer using four significant figures.