学习了氨碱法制取纯碱的知识后,化学兴趣小组的同学对纯碱的性质进行了初步探究,分别

题型:计算题

问题:

学习了氨碱法制取纯碱的知识后,化学兴趣小组的同学对纯碱的性质进行了初步探究,分别做了纯碱与盐酸、氯化钡等物质反应的实验。实验结束后,同学们把“废液”集中收集,并对“废液”的酸碱性进行了测试,结果呈酸性。大家围绕着如何处理“废液”展开了讨论:

取该“废液”样品20mL,用10%的氢氧化钠溶液进行测定,当加入氢氧化钠溶液的质量为8g时,“废液”中的盐酸恰好完全中和,测得溶液的pH刚好等于7,计算20mL“废液”样品中所含HCl的质量是多少?

考点:化学反应方程式的计算
题型:计算题

Sally. I need my dictionary. Can you _____? [ ]

A. bring me it

B. take me it

C. bring it to me

D. take it to me

题型:计算题

临床器官移植组织配型主要配型的抗原有()

A.HLA-A

B.HLA-DQ

C.HLA-B

D.HLA-C

E.HLA-DR

题型:计算题

锌与铁的化学性质相似都较______(填“活泼”或“不活泼”)能与______、______、______等几类物质发生化学反应.写出铁与以上几类物质反应的化学方程式:______、______、______.

题型:计算题

FILM DESCRIPTIONS

Back to the Future   

With the help of a local inventor’s time machine, Marty travels back to the 1950s. There his 80s hipness stands out, and he inadvertently interferes with the fledgling romance of his parents-to-be. Can Marty keep them together? He’d better, or his own future will fade away. Featuring: Christopher Lloyd, Michael J.Fox. A universal Pictures release, 1 hr. 55 min.

Beethoven’s 2nd

In this sequel to the popular Beethoven, our canine hero falls for Missy, who soon has puppies. Missy’s greedy owner, Regina, who sees only money in the little purebreds, separates mom and pups from Beethoven. His owners rescue the puppies, but Regina still has Missy. Featuring: Charles Grodin, Bonnie Hunt. A Universal Pictures release, 1 hr. 26 min.

Charlie and the Chocolate Factory

Despite the popularity of his treats, candy maker Willy Wonka shuts himself inside his factory. But then Willy holds a contest, offering five lucky children the chance to see his company. Poor but pleasant Charlie Bucket finds a ticket, as do four less-deserving children. Featuring:

Johnny Depp, Freddie Highmore. A Warner Bros. Release, 1 hr. 56 min.

Cinderella Man

Based on actual events, this film follows the life of Jim Braddock, a boxer in New York City during the Great Depression. After a series of losses, Braddock is forced into retirement. But he never gives up his boxing dream, and neither does his manager. Featuring: Russell Crowe, Renee Zellweger. A Universal Pictures release, 2 hr. 14 min.

Liar Liar  

Lawyer Fletcher Reede has never told the truth in his life. Then his son makes a birthday wish that his dad would stop lying for 24 hours. Suddenly, Fletcher’s mouth spouts everything he thinks. His compulsion brings disaster to courtroom, where he must defend a client whose case was built on lies. Featuring: Jim Carrey, Justin Cooper. A Universal Pictures release, 1 hr. 25 min.

小题1:Which of the following is probably the name of a dog?

A.Marty.

B.Missy.

C.Fletcher.

D.Charlie小题2:Willy Wonka is _______.

A.a boxer who suffers a series of losses

B.a lawyer who has never told the truth

C.a man who runs a chocolate factory

D.a man who invents a time machine小题3: Which film is about the life of a real person?

A.Beethoven’s 2nd

B.Charlie and the Chocolate Factory

C.Cinderella Man

D.Liar Liar

题型:计算题

子宫损伤的护理有哪些?

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