(8分)某藻类的化学式为C x H y O 110 N 16 P,(1)该藻类中氮、氧元素的质量比为___________; (2)已知该藻类相对分子质量为3550,现有1675 g该物质,则其中磷元素的质量为 ,若该藻类中碳元素的质量分数为35.8%。则化学式中x的近似值等于___________。
【简答题】高等学校英语应用能力考试(A级) PartIListening Comprehension (20 minutes) Directions:This part is to test your listening ability. It consists of 4 sections. Section A Directions:This section is to te...