(10株洲)31.(6分)上海世博会期间对大量盆栽鲜花施用了S一诱抗素

(10株洲)31.(6分)上海世博会期间对大量盆栽鲜花施用了S一诱抗素制剂,以保证鲜花盛开。已知S-诱抗素分子的化学式为C1 5H20O4。请回答:
(1)s-诱抗素中碳、氢、氧三种元素的质量比为              
(2)S一诱抗素中氧元素的质量分数为                  
(3)世博园的建设大量使用了太阳能、地热能、风能等新能源技术,它们将有利于       
             ;面对当今世界能源危机,为了警示人们,请你拟一条公益广告语       
                                                  。

答案

(1)45:5:16
(2)24.2%
(3)节约能能源保护环境,保护环境人人有责。解析:

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