丁酸乙酯(化学式为C 6 H 12 O 2 )是一种无色、具有菠萝香味的液体,常用作食品、饮料的调香剂.根据丁酸乙酯的化学式计算: (1)丁酸乙酯的相对分子质量是______; (2)丁酸乙酯中碳、氢、氧三种元素的质量比是(化成最简整数比)______; (3)丁酸乙酯中碳元素的质量分数是(计算结果精确到0.1%)______.
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