2008年“毒奶事件”的起因是某些牛奶供应商为了提高利润而在牛奶中兑水,导致牛奶含氮量降低(牛奶主要成分是含氮的蛋白质),通常1Kg牛奶含有0.2Kg的氮才刚好合格,因此不法供应商就将含氮量较高的三聚氰胺(C 3 H 6 N 6 )掺入加水的牛奶中以通过检测. (1)三聚氰胺(C 3 H 6 N 6 )的相对分子质量是______; (2)三聚氰胺中氢、氮元素的质量比______; (3)三聚氰胺中氮元素的质量分数为______;(计算结果精确到0.1%)
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