What Is the Quantity of Heat Evolved at Constant Pressure

question 75

Multiple Choice

What is the quantity of heat evolved at constant pressure when 30.5 g H₂O(l) is formed from the combustion of H₂(g) and O₂(g) ?
H₂(g) +
O₂(g) → H₂O(l) ; ΔH° = -285.8 kJ

• A)5.92 × 10^-3 kJ
• B)285.8 kJ
• C)8.72 × 10³ kJ
• D)168 kJ
• E)4.84 × 10² kJ

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