“苏丹红”并非食品添加剂,而是一种化学染色剂.英国食品标准署就食用含有添加苏丹红色素的食品可能诱发癌症向消费者发出警告.我国也正在严查添加有苏丹红的食品.所谓“苏丹红一号”实际上一般称为“苏丹一号”,是一种黄溶剂染料,化学式为 C 16 H 12 N 2 O,试计算: (1)苏丹红一号的相对分子质量. (2)苏丹红一号中各元素的质量比. (3)苏丹红一号中氮元素的质量分数.
【简答题】完形填空 We were late as usual. My husband had insisted on watering the flowers in the garden by him self, and 1 he discovered that he couldn't manage he asked me for 2 at the last moment. So now we had o...