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Type of questions

English Senior High

教えて欲しいです🙏

解 次の英文を読んで、あとの問いに答えなさい。 There was a famous highway in the United States called Route 66. It stretched from the city of Chicago in the middle of the country to Los Angeles in the West. It was nearly 4,000 kilometers long. For decades, it was the country's most important highway. Construction of Route 66 started in the 1920s. At that time, U.S. car ownership was growing 5 fast. In 1910, there were 500,000 cars. By 1920, there were nearly 10 million! Route 66 was built over many smaller roads between Chicago and Los Angeles. As more Americans began driving, they explored their country. Therefore, Route 66 shaped the U.S. economy and popular culture. Many businesses started in towns along Route 66. These gas stations, fast food restaurants, and hotels. There were songs and television shows 10 about Route 66. It appeared in books by famous U.S. authors like John Steinbeck. included However, Route 66 was more primitive than today's highways. Heavy traffic from cars and large trucks damaged the two-lane highway. This made Route 66 unsafe. By the 1950s, the U.S. began replacing it with modern, four-lane highways. In 1984, the last section was replaced. Today, people can ( A ) drive on parts of former Route 66. They can also visit museums or 15 look at old photographs of Route 66. But most of the kicks on that famous highway are ( B ). (ORIGINAL MATERIAL) 問1 本文の内容に合うように,次の質問 1.2に対する答えの空所を英語で埋め, 文を完成し なさい。 1. How did Route 66 shape the U.S. economy? ルート66は米国経済をどのように形作ったのか Many businesses, such as started along the way. 2. How did Route 66 shape U.S. popular culture? about Route 66 helped to shape it.

Resolved Answers: 1
Chemistry Senior High

質量パーセント濃度が3.5/100になる理由を教えてください。 この問題では質量パーセント濃度は3.5ではないのですか?わけが分からなくなってしまったのでお願いします。

物質の <問 3.5%の希塩酸 HCI 2.0L (密度1.0g/cm²) を作るには, 12mol/Lの濃塩酸HCIが向 <解きかた 最初に目をつけるのは、密度 〔g/cm²〕 です。 「密度には,とにかく体積を L必要か。ただし、HCIの分子量を365とする。ると、物 | ける」のでしたね。 2.0L は2000cmなので, 2000cm² を掛けると 1.0[g/cm²〕 ×2000〔cm²〕=2000〔g] 密度[g/cm²〕は体積〔cm²〕を質量〔g〕 に変える数字なので,こうして得られ た2000gというのは,希塩酸 2.0Lの溶液の質量〔g] です。 です さて、問題文中の「3.5%」 は 「質量パーセント濃度が3.5% 」 を意味しています。 | 「質量パーセント濃度には,とにかく溶液の質量[g] を掛ける」のでした。 溶液の質量は2000gなので -x2000〔g] =70〔g〕 3.5 100 (mis) となり,溶質HCIの質量 〔g〕 が得られます。 70gのHCI は, 物質量 [mol]に 70 36.5 直すと - [mol] となります。 では、これだけの物質量 [mol] のHCI を得るために, 12mol/Lの濃塩酸がど れくらい必要かというと、必要な量を x [L] とおけば - 70 12 (mol/L) Xx (L) == [mol] 36.5 という式ができます。 これを求めると 70 x= 36.5×12 ≒0.159≒0.16 よって 0.16 [L] のように、 「密度 〔g/cm3〕が出たら 一答

Resolved Answers: 1