Given the following information: N, bond energy = 941 kJ/mol , F, bond energy = 154 kJ/mol NF. ΔΗ = -103 kJ/mol /2 N2(9) + 3/2 F2(9) 3(g) Calculate the N-F bond energy (kJ/mol)

Chemistry: An Atoms First Approach
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Chapter7: Chemical Energy
Section: Chapter Questions
Problem 126CP: The standard enthalpies of formation for S(g), F(g), SF4(g), and SF6(g) are +278.8, +79.0, 775, and...
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Given the following information:
N, bond energy = 941 kJ/mol , F, bond energy = 154 kJ/mol
NF 3(9)
AH = -103 kJ/mol
2 N2(a) + 3/2 F2(g)
Calculate the N-F bond energy (kJ/mol)
A balloon of helium gas lost 36.4 kJ of heat while it was raising up,
simultaneously, the helium gas expanded from 64.0 L to 80.0 L against 563
mmHg pressure. Calculate the change in the internal energy (AU) of helium gas (
in kJ) . Given that ( atm.L = 101.3 J)
A ballon originally had a volume of 8.68 L at 258 K and a pressure of 575 mmHg.
To what temperature ( in K) must the balloon be cooled to reduce its volume to
5.00 L at a pressure of 730 mmHg?
Transcribed Image Text:Given the following information: N, bond energy = 941 kJ/mol , F, bond energy = 154 kJ/mol NF 3(9) AH = -103 kJ/mol 2 N2(a) + 3/2 F2(g) Calculate the N-F bond energy (kJ/mol) A balloon of helium gas lost 36.4 kJ of heat while it was raising up, simultaneously, the helium gas expanded from 64.0 L to 80.0 L against 563 mmHg pressure. Calculate the change in the internal energy (AU) of helium gas ( in kJ) . Given that ( atm.L = 101.3 J) A ballon originally had a volume of 8.68 L at 258 K and a pressure of 575 mmHg. To what temperature ( in K) must the balloon be cooled to reduce its volume to 5.00 L at a pressure of 730 mmHg?
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