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物理 高中

請問2~3題 謝謝

下午1:20 6月30日週日 I 必修物理ch.1科學態度與方法 v be m 必 【練習題】【學測物理】 91補考單選63-35:概算能力 『 西元 1808年,道耳吞提出原子說,主張物質是由原子所組成,其後,亞佛加厥提出分子的概念。 然而原子與分子到底有多大?究竟一克的氫氣有多少個原子?用現在的說法,一莫耳的原子或分 子是多少?這個問題,早已由美國著名的政治家也是科學家—富蘭克林,在西元1773年寫給朋友 的一封信中提及。他曾將一茶匙的油倒在湖面上,發現油會迅速擴張,直到蓋住約半畝的湖面就 不再擴張了。 假設油分子的形狀是正立方體,此實驗中一茶匙油的體積約為5.0立方公分,半畝湖面的面積約 為2.0 × 107平方公分,油的密度約為0.95克/立方公分,回答以下問題 (1)假設覆蓋在湖面的油層只有一個分子厚,則一個油分子的大小約為多少埃?A:(D) (1 埃=10-8 公分)(A)10-² (B)10-1 (C)10° (D)101 (E)10² (F)103 (G)104 (H)105 (2)湖面上約有多少個油分子?(A)100 (B)102C)10" (D)10" (E)1024 A: (C) A (3)假設油分子的質量為每莫耳 200克,根據富蘭克林的觀察作估算,下列何者最接近一莫耳油中 所含分子的數目?(A)1020 (B)1021 (C)102 (D)1023 (E)1024 A:(D) (3) 0.95x(107)2=9.5x10* 200 20.2×1024 (1) 5 2x100 = 2.5×107≈107(cm) = 10 (A) 5 9.531022 • 5x10"'~10² (11)- 111×1023 4 |必修物理-科學態度與方法 https://sites.google.com/site/phyelearning/ 【答:(1)D (2)A (3)C】 吳旭明×蔡佳玲老師編製 @ 87%

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英文 國中

請問16.18.

VAL DE ww 17 F CA 1.1 31 1H k DB 第二部分:題組(第16~1題,共26題) (16~19) Anna Hello, Jacob, How was your Chinese New Year? I got some red envelopes from my family. Did you get any? Jacob Yes, I got some, too. I love this festival so much. It is the best New Year 16 CO My parents planned a trip to Japan for our family. We stayed at a beautiful farm for 5 days to celebrate our own Chinese New Year. Anna Wow, it is so special to spend New Year at a farm. What did you do there? Jacob We did lots of things there, like feeding the rabbits, 17 growing vegetables, milking the cows, walking the dogs, and playing with the cats in the house. It was so interesting to stay on the farm. The owner even next summer vacation. 18 me to work there during : AB₂ AB : Jacob We cooked by ourselyes in the owner's kitchen. We had a hot pot with the vegetables 19 and the meat both from the farm. After dinner, we talked with each other until midnight. It was the greatest New Year Eve. Anna: It was so nice! Can I go with you next summer vacation? Please... Jacob Sure! Let's go together. (A) I have (B) I had 17. (A) riding on the horses (C) learning math Anna So cool!!! I like animals very much, and I always want to experience life on farms. What about the New Year Eve? What did you do at that night? Did you eat something special? 18 (A) was asking 19. (A) we picked (B) to ask (B) we brought . (C) asked (C) I am having este atil mail (B) playing computer games (D) watching the movies (C) we hated (D) I have ever had (D) ask we knew

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