Grade

Type of questions

Chemistry Senior High

線引いた所がなぜこうなるのか分かりません(._.Ⅱ 教えて下さい🙇‍♀️┏○" (多分化学基礎で 出来てないところがあるから理解できないのだとは思います…)

例題 2 かき混ぜ棒 はっぽう 図aのような容器に19.0℃の水 98gをとり, NaOHの結晶 2.0g を加え、ふたをしてよくかき混 ぜる。溶解開始から30秒ごとに 液温を測定した結果を図bに示 す。 このグラフを用いて, NaOH の溶解熱を求めよ。 ただし, 水 溶液の比熱容量は4.2J/(g・K), NaOHの式量は40とする。 発泡ポリ スチレン 図a 図 cを見ると, 温度が急激に上昇したのち, ゆるやかに下降している。 これは,発生した熱の一部が一定の割合で周囲に逃げていることを示す。 したがって, NaOHの溶解が完了したB点 (23.5℃) は真の最高温度で はない。 NaOH の溶解が瞬時に終了し、 周囲への熱の放冷が全くなかっ たとみなせる真の最高温度は,放冷を示すグラフの直線部分を反応開始 時の時間0まで延長して求めたC点 (24.0℃) である。 しゅん じ こうして求めた真の最高温度と反応前の温度との差が温度変化となる。 熱量〔J〕=質量〔g〕 × 比熱容量〔J/(g・K)〕×温度変化〔K〕より 〔分〕 Q=mc△t = (98 + 2.0) g × 4.2J / (g・K) × (24.0-19.0) K =2100J=2.1 kJ 図C かんざん NaOH 1mol (40g) あたりの発熱量に換算すると, 40 g 答え 42 kJ/mc 2.1kJx 42 kJ となる。 2.0g 70 2編 1章 化学反応と熱・光 Word! 比熱容量: specific heat capacity比熱: specific heat ヘスの法則: Hess's law 解答 = 温度計 ふた (°C) 25 24 23 22- 度 21 20 19歳 0 図b (°C) 25 24 23 22 度 21 温度 20 19 0 I I T 0 I 1 Ć (24.0°C) B A 0 1 2 I -2 -4 〒3時 N. I I I 時間 I I 時間 F I -LO 5 I 3 4 5 6 〔分〕 6

Resolved Answers: 1
English Senior High

英語長文の定期試験の問題なのですが、最初のAの正誤問題のcがT(正)になる理由が分かりません。 問題文のcの文章には Nasa succeeded in cutting down on the sound とあり、 本文には画像の蛍光ペンを引いた箇所の通り Nasa h... Read More

英語長文演習1学期中間試験 問題用紙 ※解答はすべて、 解答用紙に記入しなさい。 ※解答用紙のみ切り離して提出する。 1 Read the following essay and answer the questions. Most commercial airplanes travel at about 500 to 600 miles per hour. SR-71 Blackbird, which was developed by Lockheed Martin in the 1960s, could fly as fast as 2500 miles per hour. At that speed, you could go from Tokyo to New York in just around three hours. So why does it still take so long for ordinary people to fly? I The to shatter windows One of the biggest problems is that when a plane flies faster than the speed of sound it breaks the sound barrier, causing a sonic boom. This boom is thousands of feet below the plane. II Unfortunately, a lack of fuel efficiency and the high costs of maintenance made it unprofitable. It retired in 2003, just a few years after a major accident. But the dream of supersonic travel never died, and engineers at NASA have finally figured out a way to reduce the sound of a sonic boom to little more than that of a car door shutting. III If all goes well, they will use the data they collect to try to convince regulators to update aviation laws to allow commercial supersonic flight. At least three companies in the US are hoping to advantage of such a change, and they aim to put supersonic planes in the air within the next decade. QUESTIONS: A About the following explanations, put T if it is true, and put F if it is false. Qa. Before realizing the dream of supersonic travel, aviation laws must be changed. b. In 1960s, ordinary people could go from Tokyo to New York in just around three hours. c. Nasa succeeded in cutting down on the sound made by supersonic airplanes. d. The Concorde flew much faster than ordinary commercial airplanes. e. Supersonic airplanes can do damage to houses or buildings when they fly over land. BChoose the right sentence to fill in III a. NASA is hoping to run test flights over land in 2022. b. Military airplanes fly at speeds many times that. c. That's why the Concorde, a supersonic plane that traveled at around 1500 miles per hour, was mostly limited to routes above the ocean. CChoose the appropriate word or phrase to fill in ★ and ☆ . ★ b. so loud c. loud enough a. too loud d. louder a. make b. take C. gain d. share

Unresolved Answers: 1
English Senior High

これの解答を教えていただきたいです。

Lesson Language Revitalization in Hawaii Unfortunately, the beautiful native Hawaiian language has been endangered century, making English the language of choice. At first, the discovery of Hawaii by the West seemed to help the growth cince the early 19th century. In 1778. there were 500.000 native Hawaiian of the Hawaiian language. Western people wrote the Hawaiian language in the Roman alphabet, and Hawaiian-language newspapers were printed and cneakers. However, American and British influence grew in the following ger. Hourished because most of the native population had learned to read. It was a time of major cultural change for the native Hawaiian population. However, as more immigrants came to Hawaii from America, Europe, x X causng oW up lo be dhon theory was and financial power on the islands, many parents stopped speaking Hawaiia with their children. They saw English as the language of opportunity. Then a law was passed making English the official language in schools. Due to these Parents who of their baties. and Asia, and as American and British businessmen got increasing political heir parentd g jon over the o sick people va factors, the number of Hawaiian speakers fell to about 1,000 native speakers. In the 1970s, native Hawaiians began the revitalization of the Hawaiian che condhioimn language. In 1978, Hawaiian became one of the official state languages, along Chem! with English, and became a required course in Hawaiian schools. There has addition to the 1,000 native speakers, there are now about 8,000 people that can speak and understand the language. Aarere also been an increase in Hawaiian-language schools, with some students being taught in Hawaiian and many more learning it as a second language. Thus, in (245 words) ) seconds × 60 = ( )wpm 150 wpm~… .@Advanced 245 words -( 100~149 wpm…OIntermediate -@Beginner ~99 wpm … grown.() npa Q Answer T (true) or F (false). nA of B. 3. Even though Hawaiian-language newspapers were printed, most of the Hawaiian people could not read them. 1. People in Hawaii chose English because American and British influence had 2. At first, Western people helped the Hawaiian language grow. 5. People in Hawaii have succeeded in revitalizing the Hawaiian language.() alphabet /elfabet 4. The Hawaiian language was the language of opportunity for immigrants. ( ) Hawaiian /howá:jan/ choice /tóis/n growth /gróu0/ businessmen /biznasmèn/ (<businessman) New words political /palitikal/ Hawaii /hawá:i:/ Speed Readin print /prinl/ immigrant /imigrant/ financial /fondenjal, far-/ Sads h mons Jooks like woverlookng anen and B. Theresloe, hey grow oldor, a

Resolved Answers: 1