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Chemistry Senior High

青の線引いてるとこの文からこう考えたんですけど合ってますか?調製したシュウ酸標準溶液のモル濃度を求めるのにどこまでを使うのかよく分かってないです。教えてください😿

次の文章を読み、下記の各問に答えよ。 ただし,原子量はH=1.0,C=12.00=16.0 とし, 数値は有効数字3桁で記せ。 はじめに、シュウ酸二水和物 H2C204 2H2Oの結晶 1.26g をはかり取り、適量の純水に完全に ☆スクラス] 溶かし,アに移した。さらに標線まで純水を加えて200mLとし,c [mol/L] のシュウ酸標 ペット ユニカビーカー ウに入れた。 これ 準溶液とした。このシュウ酸標準溶液20.0mLをイではかり取り, trent に、指示薬としてフェノールフタレイン溶液を数滴加えた後,エに入れた濃度未知の水酸化 ナトリウム水溶液で滴定した。その結果, 中和点に達するまでに 12.50mL を要した。 a- 次に,この水酸化ナトリウム水溶液を用いて食酢中に含まれる酢酸の濃度を求めることにした。 食酢を純水で5倍に希釈した溶液10.0mLをはかり取り, フェノールフタレイン溶液を数滴加 えた後、この水酸化ナトリウム水溶液で滴定したところ, 中和点に達するまでに 9.00mL を要 した。 この結果を用いて, 食酢中の酢酸の濃度を求めた。

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English Senior High

(1)が分からないので教えて欲しいです。

5 10 15 20 25 S1 夏期講習 第3講 宿題読解(全クラス共通) 次の英文を読んで、 設問に答えなさい。 There is an old saying in English: "Laughter is the best medicine." Until recently, few people took the saying very seriously. Now, however, (1)doctors have begun to investigate laughter and the effects it has on the human body. They have found evidence (2a)that laughter really can improve people's health. Tests were done to study the effects of laughter on the body. People watched funny films, while doctors checked their heart rate, blood pressure, breathing and muscles. It was found ). It increases that laughter has similar effects to ( 3 blood pressure, the heart rate and the rate of breathing; it also works several groups of muscles in the face, the stomach, and even the feet. beneficial. If laughter exercises the body, it must be Other tests have shown that laughter appears to be capable of ( 4 ) the effect of pain on the body. In one experiment doctors produced pain in groups of students who listened to different radio programs. The group which tolerated the pain for the longest time was the group which listened to a funny The reason why laughter can reduce pain seems to program. be that it helps to produce natural chemicals in the brain (2b)that diminish both stress and pain. There is also some evidence to suggest that laughter helps the body's immune system, that is, the system which fights infection. As a result of these discoveries, some doctors and *psychiatrists in the United States now hold laughter clinics, in which they try to improve their patients' condition by ing them to laugh. They have found that even if feel like laughing, (5)making them ilar to those 文法テキスト宿題 p69 4 問1 下線部(1)をitの内容を明らかにして日本語に訳しなさい。 問2 下線部(2a) (2b)と同じ用法の that を含む文を、次のア~オから それぞれ1つずつ選びなさい。 7. He is the man that lives next door to us. 1. It was such a wonderful movie that I saw it five times. 5. The average price of whisky is higher than that of beer. I. No one told me that he had been ill. *. The fact that she lied made him angry. 問3空所(3)に入れるのに最も適当なものを、次のア~エから1 つ選びなさい。 7. mental powers physical exercise 1. vocal exercise I. a good sleep 問4 空所(4)に入れるのに最も適当なものを、次のア~エから1 つ選びなさい。 7. increasing . reducing 1. producing I. encouraging 問5 下線部(5)を them および those の内容を明らかにして日本語に 訳しなさい。

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