Given the standard enthalpy changes for the following two reactions: (1) 4C(s) + 5H2(g)C4H10(g)...... ΔH° = -125.6 kJ (2) C2H2(g)2C(s) + H2(g)......ΔH° = -226.7 kJ what is the standard enthalpy change for the reaction: (3) 2C2H2(g) + 3H2(g)C4H10(g)......ΔH° = ?

Q: Calculate ΔH for the reaction2 C(s) + H2(g) -----> C2H2(g)given the following chemical equations…

A: Given,

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A:

Q: A scientist measures the standard enthalpy change for the following reaction to be -661.2 kJ : ...…

A: P4H10(s) + 6H2O (l)------> 4H3PO4(aq) ∆Hof( P4H10 )= -3009.94 kJ/mol ∆Hof(H2O)= -285.82 kJ/mol…

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A:

Q: Given the standard enthalpy changes for the following two reactions (1) 4C(s) + 5H2(g)–C,H10(g) AH°…

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A:

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A:

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Q: Please help me with the attached question.

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