【正文】 +):①②③12．2013年3月我國科學(xué)家報道了如圖所示的水溶液鋰離子電池體系，下列敘述錯誤的是（）A．a(chǎn)為電池的正極B．電池充電反應(yīng)為LiMn2O4=Li1xMn2O4+xLiC．放電時，a極鋰的化合價發(fā)生變化D．放電時，溶液中Li+從b向a遷移13．室溫下，將1mol的CuSO4?5H2O(s)溶于水會使溶液溫度降低，熱效應(yīng)為△H1，將1mol的CuSO4(s)溶于△水會使溶液溫度升高，熱效應(yīng)為△H，CuSO?5HO受熱分解的化學(xué)方程式為：CuSO?5HO(s)=====24242CuSO4(s)+5H2O(l)，熱效應(yīng)為△H3。（2）100℃時達到平衡后，改變反應(yīng)溫度為T，c(N2O4)?L1?s1的平均速率降低，經(jīng)10s又達到平衡。27．（15分）鉛及其化合物可用于蓄電池，耐酸設(shè)備及X射線防護材料等。陽極發(fā)生的電極反應(yīng)式，陰極觀察到的現(xiàn)象是：若電解液中不加入Cu(NO3)2，陰極發(fā)生的電極反應(yīng)式，這樣做的主要缺點是。為確定其組成，進行如下實驗：①氨的測定：精確稱取w g X，加適量水溶解，注入如圖所示的三頸瓶中，然后逐滴加入足量10%NaOH溶液，通入水蒸氣，將樣品溶液中的氨全部蒸出，用V1 mLc1 mol②氯的測定：準(zhǔn)確稱取樣品X配成溶液后用AgNO3標(biāo)準(zhǔn)溶液滴定，K2CrO4溶液為指示劑，至出現(xiàn)磚紅色沉淀不在消失為終點（Ag2CrO4為磚紅色）。（4）測定氨前應(yīng)該對裝置進行氣密性檢驗，若氣密性不好測定結(jié)果將(填“偏高”或“偏低”)。（已知：Ksp(Ag2CrO4)= 1012）(6)經(jīng)測定，樣品X中鈷、氨和氯的物質(zhì)的量之比為1:6:3，鈷的化合價為?；卮鹣铝袉栴}：（1）下列改進和優(yōu)化海水綜合利用工藝的設(shè)想和做法可行的是（填序號）。（4）采用石墨陽極．不銹鋼陰極電解熔融的氯化鎂，發(fā)生反應(yīng)的化學(xué)方程式為；電解時，若有少量水存在會造成產(chǎn)品鎂的消耗，寫出有關(guān)反應(yīng)的化學(xué)方程式3[化學(xué)——選修3：物質(zhì)結(jié)構(gòu)與性質(zhì)]周期表前四周期的元素a、b、c、d、e，原子序數(shù)依次增大。（3）這些元素形成的含氧酸中，分子的中心原子的價層電子對數(shù)為3的酸是；酸根呈三角錐結(jié)構(gòu)的酸是。38．[化學(xué)—選修5：有機化學(xué)基礎(chǔ)]（15分）立方烷（）具有高度的對稱性、高致密性、高張力能及高穩(wěn)定性等特點，因此合成立方烷及其衍生物成為化學(xué)界關(guān)注的熱點。（6）立方烷經(jīng)硝化可得到六硝基立方烷，其可能的結(jié)構(gòu)有種。L1)= molMg+2H2O+H2173。首先，我想我應(yīng)該對所有這些事情我的老師教前中期，這樣我可以更好地了解他們。高一英語作文：健康成長 Healthy growthWe all want to grow up happily and healthily, and for this goal we must do several , we should develop a good attitude to consists of not only sunshine but also hard should be brave in front of , we must study hard because knowledge is we have the power, we can help to build our country and enjoy life , in order to study well, we need to do sports so that we can keep can go running, play ball games or simply take a walk after a day39。我們應(yīng)該勇敢的面對困難。我們可以去跑步，玩球或只是簡單的走一天的學(xué)習(xí)之后。認(rèn)為是一種美德，是欣賞每個國家和文化。同樣的事情可以說，一個商人試圖致富靠欺騙顧客。然后學(xué)生們被抓到作弊可以criticizedpublicly，處罰甚至開除。作為學(xué)生，我們經(jīng)常參加學(xué)校的考試，但有時我們有太多的考試對我們來說太難了。我們學(xué)生應(yīng)當(dāng)誠實，努力取得好結(jié)果通過努力學(xué)習(xí)，而不是考試作弊。她為我們提供了足夠的食物，足夠的水和足夠的生活空間。有些人會問為什么不把土地覆蓋著樹，花和草？為什么不阻止土地被沙漠？為什么不阻止空氣被污染？為什么不阻止地球中毒嗎？是的！我們的環(huán)境受污染的速度比自然和人的努力，可以防止。所以專家們宣稱自然界的平衡被破壞了。我們永遠(yuǎn)不會破壞自然的平衡。高一英語作文：My New HouseI live in a new house are three bedrooms, two bathrooms, a study, a kitchen, a diningroom and a large ’ a desk beside my the bed, there are some ’s a map of the world on the ’s telephone between the map and the ’s a garden near my ’s a small one, but there are a lot of flowers and it there are some swings and there’s a slide, too, sometimes I go and play 。高一英語作文：My English TeacherOf all the teachers, I love my English teacher is a very good teacher and about thirty years all call him Mr is not tall but a little is a man with a good sense of humour and always friendly to all like him and his his class, we feel very always makes his English lesson know English is rather difficult to learn but in his class, we feel English is very easy, and also very often shows us how to learn English asks us to listen, to read, to say and to class, we always talk with him in even lends English books to we have difficulty in understanding, we can go and ask is always happy to help not only cares for our study, but also for our day, one of my classmates, Li Tong had a bad took her to see a doctor, and got some medicine for he sent her Li Tong stayed at home, Mr Chu went to her home and helped her with her days later, she was able to go back to is my English do you think of him?所有老師中，我最愛我的英語老師。他是一個有幽默感的男人，一直對我們很友好。我們都知道英語是比較難學(xué)但在他的課，我們覺得英語很容易，也很有趣。他甚至借英語書給我們。有一天，我的一個同學(xué)，李彤得了重感冒。幾天后，她能夠回到學(xué)校。我的姑媽獨自住在一個山村，一條小河蜿蜒的課程。忽然一聲：“幫助！救命啊。那個男孩救了。但令我吃驚的是，有一個大的魚上鉤了。我們開始上