aryan789

Write a summary about the activity of jogging and how we benefit from jogging.

Subject-Cívics

How do political rights and freedoms and economic rights and freedoms depend on one another? Discuss how the one compliments the other. Come back in a couple of days and respond to a post from at least one of your peers. Do you agree, or disagree with their statements? Why?

Hello, I need help with finding the enthalpy for the reactionbelow with the given bond energies.

C2H4 (g) + H2 (g) -----> C2H6 (g)

BE (H-H)= 436 KJ/mol

BE (C-H)= 414 KJ/mol

BE (C-C)= 347 KJ/mol

BE (C=C)= 620 KJ/mol

Please include steps clearly because I trule want to understandhow you arrived at your answer.

Thank you,

Erick

Hydrogenation of carbon double bonds C=C (i.e. adding a hydrogen on each carbon atom and thus reducing the double bond into a single bond: H-C-C-H) is a very common process in organic and polymer chemistry. Using the data from the following table, calculate the ΔH_reaction when ethylene C₂H₄ is reduced into ethane according to the reaction below:

C₂H_4(g) + H_2(g) --> C₂H_6(g)

The ΔH_reaction is

For the reaction: H2(g)+C2H4(g)-->C2H6(g)

Bond & Bond Enthalpy

H-H 436.4 kJ/mole

C-H 414 kJ/mol

C-C 347 kJ/mol

C=C 620 kJ/mol

Substance & delta Hf

H2 0

C2H4 52.3

C2H6 -84.7

(a) estimate the enthalpy of reaction, using the bond enthalpy values from the table in kJ/mol

(b) Calculate the enthalpy of reaction, using standard enthalpies of formation

The average C--H bond energy in CH4 is 415 kJ/mol. Use the following data to calculate the average C--H bond energy in ethane (C2H6; C--C bond), in ethene (C2H4; C=C bond), and ethyne (C2H2; C (triple bond) C).

What are the H-C-H bond angles in Ethane, Ethene, and Ethyne?

Calculate the amount of heat (in kJ) required to convert 75.6g of water to steam at 100 degree C. (The molar heat of vaporization of water is 40.79 kJ/mol.)

The molar heat of vaporization of water is 44.01 kJ mol-1 at 298 K and 40.79 kJ mol-1 at 373K. Give a qualitative explanation of the difference in these two values.