When 1.0 gram of hydrogen reacts with 8.0 grams of oxygen 9.0 grams of water are produced and 142 kJ of heat are released.How many grams of hydrogen and how many grams of oxygen must react to produce 250 kJ of heat? A)0.57 g H₂ and 4.5 g O₂ B)0.57 g H₂ and 14 g O₂ C)1.8 g H₂ and 4.5 g O₂ D)1.8 g H₂ and 14 g O₂

Question

Quizplus · Accepted Answer

To produce 250 kJ of heat, we use the ratio of heat produced to reactants. 1.0 g H₂ and 8.0 g O₂ produce 142 kJ, so for 250 kJ, we need (250/142) times the amount of each reactant. This results in approximately 1.8 g H₂ and 14 g O₂.

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