Use  bond enthalpies (in kJ/mol):  C-C    348    C=C    614    C≡C   839          H-H  436              C-H   413          O-H  463                     C-O 358                  C=O    799                      to estimate ΔH for the reaction      H2C=CH–CH2–OH (g)  =  >  HC≡C–CH=O(g)  + 2 H2(g)           SHOW WORK FOR CREDIT 

Answer the following question. Show the answer on the screen provided. After uploading your exam, take the picture of your work and upload it to Exam 4 Solutions, Extra Credit, and Partial Credit assignment. Your work must reflect the answer provided here. NO CREDIT will be awarded for the answer without work shown. Use Hess’s law to calculate the enthalpy of reaction for the target reaction 2 F2(g) + 2 H2O(l) => 4 HF(g) + O2(g) from: H2(g) + F2(g) => 2 HF(g);                      ΔHo  = -542 kJ2 H2(g) + O2(g) => 2 H2O(l);                 ΔHo  = -572 kJ  

Question 4 (10 points) Find the inverse Laplace transform

Which substance in the liquid state has only dispersion forces and hydrogen bonding?

A 0.113 g sample of an organic compound with a molar mass of 306.0 g/mol was burned in the bomb calorimeter with a heat capacity of 2.24 kJ/K. The temperature in the calorimeter increased by 3.12 K. Calculate the energy of combustion of the compound in kJ/mol.

Question 10 (10 points) Find the solution  to the following initial value problem using the Laplace Transform technique.

Answer the following question. Show the answer on the screen provided. After uploading your exam, take the picture of your work and upload it to Exam 4 Solutions, Extra Credit, and Partial Credit assignment. Your work must reflect the answer provided here. NO CREDIT will be awarded for the answer without work shown. Use Hess’s law to calculate the enthalpy of reaction for the target reaction 2 F2(g) + 2 H2O(l) => 4 HF(g) + O2(g) from: H2(g) + F2(g) => 2 HF(g);                      ΔHo  = -542 kJ2 H2(g) + O2(g) => 2 H2O(l);                 ΔHo  = -572 kJ  

Question 7 (10 points) Find a particular solution for the DE below by the method of undetermined coefficients. Use this to construct a general solution (i.e. ).

The value of the following  will increase with the increase of the strength of the intermolecular forces:

A  75.0 L balloon contains 215.18 g of neon at 27oC. Calculate the pressure in atm,  in the ballon.