第:节长長达(满分25分) Possible versionDate: March 21.2021The annual translation competition on Chinese poetry is going to be held online trom March 2& to 30 byschools English Chub. Any student who would like to participate needs to email the translation totranlslation-202lyahoo.com,andattachano-longer-than-3-minutevideoofpertormingthetranslationinspecially designed scene related to the poem. Then based on ten professional judges decision, there will be afirst-prize winner, two second-prize and five third-prize. The awards are more than wonderful and appealing, suchas Kindles and gil cards of Xinhua BookstoreAll of you, including the overseas students, are welcome to join in the activity. Not only can the experiencehelp you to gain a deeper understanding of Chinese culture and history, but it also gives you an opportunity to showhow well you master both Chinese and English. So what are you waiting for? Just begin your translationThe english Club

解析:用油膜法估测分子直径时,为了使油酸在浅盘的?面厂容島形成一块单分子层油膜,需要+抗油滷油酸酒精溶液形成的油膜的面积为160cm酸稀释成一定浓度的油酸酒精溶液,油;了的直d=3,油酸未完全散开,所泞小,d大。每滴酒精油酸溶液中含有纯油酸的体积V=1056mL=1×y“m3,油酸膜的面积为S=1.6×102m2,把油酸分子看成球形,且不考肉分川的主腺,则分子的直径d=sX10-11.6×10-7m=6.25×10-m,答案:单分子(1分)偏大(1分)6.25×10-1(3分)(体发生等压变化盖一吕萨克定律得(2分)t=375K解得原气球内气体的体积为V2=500m3(1分)球内剩余气体的质量点原来气球内气体量的百分比为0m×19%-8(2分()设气球刚好从地面飘起时气珠内的气体温度为T,密度为p,则气珠升起时浮力等于气球和内部的总重力即PKV=Mg+pV(1分)1为气岩的气体温度升高时压强井没有变化,则原来的气体温度升高后体积设力V,根据质量炽诉有PV:=pV(1分)原来的气体温度升后不变,体积从V变力V由盖一吕萨克定律滑”(2分)解得T≈43K1分

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