Grade

Type of questions

Chemistry Senior High

この問題の問1は、はみだした10cmの溶液の圧力によって判断しますが、はみ出てない分の水と溶液の主さが同じでないと使えなくないですか、なぜ重さでなく体積での判断なのか分かりません

次の文章を読んで,問1~5に答えなさい。 計算結果は, なさい。 ある純溶媒,分子量 120 の不揮発性物質 X, および中央を半透膜で仕切った左右対称 なU字型の容器 (U字管) を用いて, 以下に示す2種類の実験 A,Bを行った。物質Xは、 用いた溶媒中において電離度 α で Y + と Z¯に電離する。なお,溶液中では,これらの イオンも溶質粒子として働く。 実験温度 T〔K〕は一定で,気体定数R 〔Pa・L/(mol・K)] との積をRT=2.5×10° Pa・L/mol とする。実験時の大気圧は1.0 × 10° Pa で,空気は理想気体とする。空気は溶 媒に溶解せず,溶媒は蒸発しないものとする。U字管の内径の断面積は 1.0 cm² で一定で あり,かつ,高さ 1000cm の溶液の液柱が底面に及ぼす液柱による圧力は,溶液の濃度 に関わらず 1.0×10Pa とする。 実験 A 15mgの物質 X を純溶媒に溶解し, 全体積が500mL となるように溶液を調製した。 その溶液のうち, 20mLをU字管の右側に入れた。 一方, U字管の左側には,純溶媒 を 20 mL 入れた(図1(a))。 その後,十分な時間放置すると右側の液面が上昇し,左右 の液面の高さの差が10cm で一定となった (図1 (b))。以降, U字管の右側の溶液を溶 液と呼ぶ。 半透膜 (a) 放置 U字管 10cm (b) 溶液1 図 1 問1 図1(b)の状態にある溶液1の浸透圧は何Pa となるか答えなさい。 問2 溶液1中の全溶質粒子のモル濃度Cを, 溶液1中に存在する物質Xの電離前の モル濃度 Cx と物質Xの電離度 α を用いて表しなさい。

Waiting for Answers Answers: 0
English Senior High

1枚目の本文に対する2枚目の問題の答えを3-イか3-ロで迷っているのですが、どちらが正解かわかりません。どなたか理由もあわせて教えてもらいたいです。 よろしくお願いします!

Omoiyari is said to be a key concept of the Japanese mentality. (Its primary meaning is the ability to imagine other people's feelings. Japanese people's good manners have often (2) been associated with it and reported in news articles. For example, Japanese soccer supporters cleaned up the stadium after the matches at the World Cup, actions that were praised by the foreign media. Some experts say the supporters' behavior is related to education in Japan, where children clean their classrooms every day. Another example was seen during the frequent natural disasters. Even in such situations, many people still kept calm and patiently waited in lines for emergency supplies. JANET [ 3-1 ] According to a survey by an organization to promote good manners in Tokyo, less than 30 percent of Tokyo residents think people in Tokyo have good manners. [ 3-□ ] For example, Tokyo residents notice bad manners on the train. (4)Some young people sit in priority seats and do not give sit (5). V₂ 1 up their seats to the elderly, and others put on makeup. [ 3-> ] In an effort to get the passengers to 52 act more (5), railway companies display posters, saying things such as, "Please line up and c wait your turn" or "Please switch your phone to silent mode while ( 6-a) the train." 5 [ 3-= ] Omoiyari is often seen in school mottoes and emphasized in moral education at school. Some of the values that students are ( 6-b) include respecting the elderly, helping those with disabilities, and keeping promises. Students also take turns (6-c) in charge of cleaning the classroom, serving lunch, taking care of plants and animals. In addition, volunteer clubs collect money for charitable organizations and members visit elderly people in nursing homes. In moral education class, students read stories and discuss the topics in them. The teacher facilitates the discussion and the students draw their own conclusions. (Nakaya, et al., Discuss the Changing World, Seibido)

Waiting for Answers Answers: 0