混合下列各组物质使之充分反应,加热蒸干产物并在300 ℃灼烧至质

 混合下列各组物质使之充分反应,加热蒸干产物并在300 灼烧至质量不变,最终残留固体不是纯净物的是(  )

A.向红褐色的Fe(OH)3固体中加入过量盐酸

B.等物质的量浓度、等体积的(NH4)2SO4BaCl2溶液

C.等物质的量的NaHCO3Na2O2固体

D.向NaBr溶液中通入过量氯气

答案

C

相关题目

She advised us _____ carefully in her class.    A. listen         B. li
She advised us _____ carefully in her class.    A. listen         B. listening   C. to listen          D. listened
用低倍显微镜观察人的口腔上皮细胞实验中,四位同学在视
用低倍显微镜观察人的口腔上皮细胞实验中,四位同学在视野中看到的物像分别如下图所示,你认为观察效果最好的是(    ) 
写出下列加点字的读音。 (1)偌大(      )       
写出下列加点字的读音。 (1)偌大(      )        (2)沧桑(      )        (3)老茧(      ) (4)诚挚(      )       
随着我国经济持续高速增长、市场竞争日益扩张、竞争不断
随着我国经济持续高速增长、市场竞争日益扩张、竞争不断升级、商战已开始进入“智”战时期,广告也从以前的所谓“媒体大战”、“投入大战”上
 –Please tell us something about Shennongjia.        –I’m sorry,
 –Please tell us something about Shennongjia.        –I’m sorry, but neither Jack nor I       there.       A. have been     B. had been      C. have gone     D
如图,直线AB、CD相交于O,且∠AOC=2∠BOC,则∠AOD的度数为__
如图,直线AB、CD相交于O,且∠AOC=2∠BOC,则∠AOD的度数为________  
(2010·福建莆田九中高三上第二次月考)    34. The reason ____
(2010·福建莆田九中高三上第二次月考)    34. The reason ____ Malcolm didn’t study art was ___ his father didn’t want him to. A. why; that    B. why; because     C. for;
What is your favorite color? Do you like yellow,orange,red? If you do,you
What is your favorite color? Do you like yellow,orange,red? If you do,you must be an optimist,a leader,an active person who enjoys life,people and excitement.Do you prefer grey and blues

最新题目