现有A、B、C三种化合物,各取40g相混合,完全反应后,得到18.0g B、49

现有A、B、C三种化合物,各取40g相混合,完全反应后,得到18.0g B、49.0g C、还有D生成,已知D的式量为106。现将20.0g A和11.0g B反应,能生成D的物质的量为(    )

A.1.00mol  B.0.500mol C.0.275mol D.0.250mol

 

答案

D

解析:略

 

相关题目

已知:如图,为上一点,点分别在两侧.,,.求证:.
已知:如图,为上一点,点分别在两侧.,,.求证:.
Neither he nor I _________ from Canada; we are from Australia. A. is      
Neither he nor I _________ from Canada; we are from Australia. A. is               B. are                 C. am            D. was  
如图,直线y=kx(k>0)与双曲线y=交于A、B两点,若A、B两点
如图,直线y=kx(k>0)与双曲线y=交于A、B两点,若A、B两点的坐标分别为(x1,y1),(x2,y2),则x1y2+ x2y1的值为( ).      (A)-4.         
根据句意,用括号内所给词的适当形式填空。 1. __________(luc
根据句意,用括号内所给词的适当形式填空。 1. __________(luck),he passes the exam. 2.It’s five ______(minute) walk from my home to my school. 3. He lives on the___________(
(2009·宁夏中考)一束光从地球到月球需要1.27 s,则地球到
(2009·宁夏中考)一束光从地球到月球需要1.27 s,则地球到月球的距离是_____m.
Editor’s notes: AWL is well known for its dictionaries and English language t
Editor’s notes: AWL is well known for its dictionaries and English language teaching materials. Some readers have written in to ask us for the latest information on high quality books on English,
(本小题满分12分) 已知函数,曲线在点处的切线方程为.
(本小题满分12分) 已知函数,曲线在点处的切线方程为. (I)求a,b的值; (II)证明:当x>0,且时,.
 I really can’twith the loud noise outside. It is driving me crazy. A. come
 I really can’twith the loud noise outside. It is driving me crazy. A. come up                          B. put up C. push ahead                      

最新题目