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English Junior High

答えがない高校の過去問です。 回答確認のために教えてほしいです。

【2】次の英文を読んで, 下の(1)~ (5)の英文の( を書きなさい。 )に当てはまる最も適当なものを, それぞれア~エの中から1つずつ選び, その記号 *Ogasawara Islands are a group of islands in *the Pacific Ocean, about. 1000 kilometers south of Tbkyo. There are more than 30 islands, and about 3000 people live on the two largest islands. They are sometimes called “Tolyo's *Hidden Islands' or **the Galapagos of the East". When Ogasawara people go to Tbkyo, they have to take a ferryboat for 24 hours because there is no airport. Ogasawara Islands are far from the main islands, so there are many kinds of *unique plants and animals.They are called *endemic species. Thirty - six percent of the plants on the islands'are endemic species. We can see those plants only in Ogasawara Islands. Because only plants and animals that have *adapted to Ogasawara *environment could *survive, unique *ecosystems were developed. This is a story about people who saved two kinds of animals on Ogasawara Islands. One is a red-headed wood pigeon, Karasu Bato".: This is one of the endemic species on Ogasawara Islands. Birds usually live on trees and *protect themselves from their *enemies. But red-headed wood pigeons on the islands have no enemies, so they live on the ground. Their living environment has changed since people brought cats to the islands as pets. Some of them *went wild and became *stray cats. Amother cat usually has about 20 babies a year, so the number of the stray cats *kept increasing and a lot of pigeons were eaten by them. In 2002, the number of the pigeons was only about 40. People began to think they should do something to protect this endemic species and natural environment on Ogasawara Islands. In 2008, people on the islands, Japanese and *overseas researchers, *public officials and animal doctors met together and started a project to save the pigeons. At thé meeting, they decided to *get rid of the stray cats, but they didn't know what to do. So after the meeting, they asked *the Tbkyo Veterinary Medical Association for advice. Animal doctors in this association *cooperated with a lot of volunteers and started a project to save the stray cats. They said, “The pigeons can't survive outside the islands, but cats can live in Tokyo. We want to save both kinds of animals,” The stray cats were *caught and carried to Tbkyo by ship. Animal doctors and volunteers took care of them and looked for their new fanmilies. From 2008 to 2018, about 800 stray cats were sent to Tokyo to start their new ife. Also, the number of pigeons has increased to about 400 now. This story shows that people may have a bad *influence on the natural environment, but we can protect and make it better by cooperating with each other. A person who took part in this project said, “It is important for us to think how we can keep the natural environment for the future." “Aka-gashira *the Pacific Ocean 太平洋 *unique 独特の *environment 環境 *went wild 野生化した *Hidden 隠された *endemic species 固有種 *ecosystems 生態係 (注) *Ogasawara Islands 小笠原諸島 *the Galapagos ofthe East 東洋のガラパゴス *adapted adapt 「適応する」 の過去形·過去分詞 *protect~ ~を守る *kept increasing 増え続けた *get rid of ~ *suIvive 生き残る *stray cats ノラネコ *public officials 公務員 *enemies 敵 *overseas researchers 海外の研究者 *c0operated 協力した ~を駆除する *caught catch 「~をつかまえる」の過去形·過去分詞 *the Tokyo Veterinary Medical Association 東京都獣医師会 *influence 影響

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Science Junior High

この問題の(4)の質量の出し方が分かりません! 教えてくださると、嬉しいです! 答えは、5.10 gです!

2試験管Aの中にある加熱した後の物質の質量、g 図1のような装置を組み,酸化銅の還元についての実験を行った。これ 33 について,あとの問いに答えなさい。 ただし, 試験管Aの中にある気体の質量 は無視できるものとし, 試験管Aの中では,酸化銅と炭素粉末の反応以外は起 こらないものとする。 実験0 酸化銅4.00gに炭素粉末0.10gを加えてよく混ぜ合わせた。 2 酸化銅と炭素粉末の混合物を試験管Aの中にすべて入れて加熱したところ, ガラス管の先からさかんに気体が出て,試験管Bの中の石灰水が白くにごった。 3 十分に加熱した後,ガラス管を石灰水の中からとり出し, ガスバーナーの 火を消した。すぐにピンチコックでゴム管をとめ, 試験管Aが冷えてから, 試験管Aの中にある加熱した後の物質の質量を測定した。 酸化銅は4.00gのまま, 炭素粉末の質量を0.20g, 0.30g, 0.40g, 0.50g と変えて混合物をそれぞれつくり, ②と③の操作を繰り返した。 図2は,加えた炭素粉末の質量と試験管Aの中にある加熱した後の物質の質 量との関係をグラフに表したものである。なお, 加えた炭素粉末の質量が0.30 g, 0.40g, 0.50gのときの試験管Aの中にある加熱した後の物質の質量は, それぞれ3.20g,3.30g, 3.40gであった。 (1) 実験の②で石灰水を白くにごらせた気体の名称を書きなさい。 図1試験管Aoピンチコック 試験管B ウム ゴム管 〈鹿児島) ロ ガスバーナー ガラス管 石灰水 試 4.00 3.00 2.00 1.00 0 0 0.10 0.20 0.30 0.40 0.50 加えた炭素粉末の質量 [g] o

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