stion 5 The enthalpy of combustion under a pressure of one atmosphere of one mole of methane at 298K is -212.8 kJ. CH4 (g)+202 (g)>CO2(g) +2H2O(1) a. Calculate the average molecular speed of CO2 gas at 298 K (C=12, O–16) b. Calculate the standard enthalpy of formation of the methane at 298K ;AĦ°(methane(g),298K). Given: A CH,0(); 298K) =-68.33 kJ/mol); A(CO2 (3); 298K) = -94.25 kJ/mol) %3D

stion 5 The enthalpy of combustion under a pressure of one atmosphere of one mole of methane at 298K is -212.8 kJ. CH4 (g)+202 (g)>CO2(g) +2H2O(1) a. Calculate the average molecular speed of CO2 gas at 298 K (C=12, O–16) b. Calculate the standard enthalpy of formation of the methane at 298K ;AĦ°(methane(g),298K). Given: A CH,0(); 298K) =-68.33 kJ/mol); A(CO2 (3); 298K) = -94.25 kJ/mol) %3D

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

Similar questions

A 0.305 mol0.305 mol sample of N2(g),N2(g), initially at 298 K298 K and 1.00 atm,1.00 atm, is held at constant pressure while enough heat is applied to raise the temperature of the gas by 11.1 K.11.1 K. Calculate the amount of heat ?q required to bring about this temperature change, and find the corresponding total change in the internal energy Δ?ΔU of the gas. Assume that the constant‑pressure molar specific heat for N2(g),N2(g), which consists of linear molecules, is equal to 7?/2,7R/2, where ?=8.3145 J/(mol·K)R=8.3145 J/(mol·K) is the ideal gas constant. ?=? Δ?= ?
An perfect gas (the system) is contained in a flexible balloon at a pressure of 1 atm and is initially at a temperature of 20.°C. The surrounding air is at the same pressure, but its temperature is 25°C. When the system has equilibrated with its surroundings, both systems and surroundings are at 25°C and 1 atm. In changing from the initial to the final state, which one of the following relationships regarding the system is correct? AH = 0 w > 0 AU = 0 AU 0
Given the reaction and AH shown below Cas) + 2 HCl(aq) → H2(g) + CaCl2(aq) AH = -62.0 kJ/mol Ca An unknown amount of Ca is reacted with 200 mL of 2.00 M HCI (an excess) in a calorimeter. The temperature increases from 25.00 to 29.26°C. How many g of Ca reacted? Assume all solutions have d= 1.00 g/mL and specific heat = 4.18 J/g°C O none of the answers are correct O 4.60 g Ca O 3.45 g Ca O 58 Ca
The standard enthalpy of formation (AH°;) of C2H4(g) is +52.4 kJ/mol. What is the coefficient of H2 in the formation reaction of C2H4(g)? Enter your answer as a whole number in the answer box.
Question 8 (1 pt) Calculate the final temperature of a sample of argon of mass 12.0 g that is expanded reversibly and adiabatically from 1.0 dm³ at 273.15 K to 3.0 dm³. Cp,m = 20.786 J/Kmol
Lauto.d21?ou=2194845&isprv3D&drc=0&qi=2824083&cfql=0&dnb=D0&f Calculate the standard enthalpy change for the reaction 2C8H18(1) + 17O2(g) → 16CO(g) + 18H20(1) Given: 2C3H18(1) + 2502(g) – 16CO2(g) + 18H20(1) AH° = -11020 kJ/mol 2C0(g) + O2(g) – 2CO2(g) AH° = -566 kJ/mol a) 10450 kJ/mol b) -6492 kJ/mol O c) 15550 kJ/mol d) 6492 kJ/mol e) -10450 kJ/mol
Can someone help me solve this problem?Thank you
PART 1: For each of the following questions, refer to the following balanced equation and the Data Table above. Give your answers to the first decimal place if the answer is greater than 1. Otherwise, use exponential format (e. g. 1.23E-10) 2 HgO(s) = 2 Hg(l) + O2(g) a) Determine the value of Horxn at 298 K, based on moles of O2. Do not include the units in the answer (in kJ/mole) b) Determine the value of Sorxn at 298 K, based on moles of O2. Do not include the units in the answer (in J/moleK)
Given the following reactions A (g) +B (g) – 2 C (g) AH = +810.7 kJ 2 C (g) + B (g) → 2 D (g) AH =- 321.1 kJ the enthalpy for the decomposition of D into A and B 2D (g) → A (g) + 2B (g) is kJ. 1131.8 OA. 45.5 В. 489.6 OC. O D.-1131.8 O E. Е. – 489.6
#7: Can you clearly show the work for this question
A cylinder in a car engine takes 4.50 x 10-2m3air into the chamber at 303.15 Kand at atmospheric pressure (1.013 x 105Pa). The piston then compresses the air to 10 % of the original volume and 20 times the original pressure(R = 8.314 J/mol K). (i). Calculate the number of moles in the air. (ii). What is the new temperature of the air?
Jj.62.