卫星发射时可用肼(N2H4)为燃料,1mol气态肼在适量氧气中燃烧,生

卫星发射时可用肼(N2H4)为燃料,1mol气态肼在适量氧气中燃烧,生成氮气和水蒸气,放出534KJ的热量。下列说法中正确的是(  

A. 1mol N2H4 g的能量比1molN2g的能量高534KJ

B. 1mol N2H4 g的能量比1molN2g的能量低534KJ

C. 1mol N2H4g1molO2g的总能量和比1molN2g2molH2Og的总能量和高534KJ

D. 1mol N2H4 g1molO2g的总能量和比1molN2g2molH2Og的总能量和低534KJ

答案

C

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