What Mass of Oxygen Is Consumed When 285

question 77

Multiple Choice

What mass of oxygen is consumed when 285.5 kJ of energy is evolved from the combustion of a mixture of H₂(g) and O₂(g) ?
H₂(g) +
O₂(g) → H₂O(l) ; ΔH° = -285.8 kJ

• A)15.98 g
• B)31.96 g
• C)0.01564 g
• D)31.98 g
• E)0.01679 g

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