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理科 中学生

(3)と(4)の解き方がわかりません。 中一理科の飽和水溶液・溶解度の問題です 答え:(3)5g (4)28g

○|O 春期講習 表1 物質の水へのとけ方を調べるために, 3種類の物質 A~ Cを準備して実験を行った。 物質 A~C は硝酸カリウム, 塩化ナトリウム, ミョウバンのいずれかである。表1 は, それぞの物質が水 100gにとける限度の量をまとめたもの である。 水の温度(°C) 07 0v 09 硝酸カリウム (g) 32 64 60L 塩化ナトリウム(g) 38 38 6E ミョウバン(g) 11 23 LS 表2 3つのビーカーX~Zに, 60℃の水と物質 A~Cをそれぞれ入れた。かき混ぜながら, 水溶液の温度を下げていき, それぞれの水溶 液にとけ残りがあるか観察した。表2は, 各 【実験】 水溶液の温度(°C) 一 ビーカー 水と物質の質量 20 0% 09 水300gと物質A60g ビーカーに入れた水と物質の質量と, 20℃, X 水 200g と物質B50g 40°℃, 60℃のとき,とけ残りができたかどう かをまとめたものである。 「○」は物質がすべて水にとけたことを, 「×」は物質のとけ残りがあったことを表している。 人 水 100g と物質C40g Z (1) 固体の物質をいったん水にとかし, 溶解度の差を利用して結晶として取り出すことを何というか。 (2) 物質 A~Cは,それぞれ何か。物質名で書きなさい。 (3) 60°℃におけるピーカーXの水溶液30g を蒸発皿にとり, 加熱して水分をすべて蒸発させたところ,物質 Aの結晶 が残った。この物質 Aの結晶は何gか。 (4) 20℃におけるビーカーYの水溶液をろ過したとき, とり出せる物質 B の結晶は何gか。

未解決 回答数: 1
英語 中学生

3、4、5教えてください💦

の記を大以下の要回の答えを(ア)ー(エ)より選び記を符えなきい Young People cet cw fit than older people Some people say that young people "friues js that tree? Take a ook at iMis ablc Ths s mede by the Minidry of mltL Labor and Welfare。You cmn see how je fruit young eople er The reewon for this trend is simplk。 Mt | oumg pcople dont cat fruit becauwe they ae too cxpensive to cat every day。 Some young pcople say tbey dont et them beeuse iiey dnt want to get their hands diry or cciing them is a Tnuisance。Another rcnson 5 thatifyoung people ive by themsclves ir js difcultto nh eatng arge fuitssuch as atermeons or meions belore they "ro bad. Some kinds of fruit are sGll popular among young peoplc. The rmost or he fits are "imporred from other countrie clerwin japan are triing to change lessonsr to dlementary schooky Others sre promotng fruit on radio programs Anot Many fruit growers and fu ュ vending machine for fruit An apple cutter acked ut appkes at ome sattons It wil be intereving to we young people eat 半柱 *lees こかない *go bad 麻る。 wimport 得する 設問 1. Why are youmg people called "fruitlessT te Nmiary VHHkaNdL Labor and Water 厚生人 manufacture 半 Tr 人20I5和人 yare kiwi fits and banans_ However iion。 Some farmers olcr fruit ther interesting tril manufacturer introduced vending machines which we morc or lews fnit in the future knuikance うんきりすること の) Because youmg people don't eat much fruit (の Because young people dont grov fm (②) Because young people ike to cat ri (ご) Because many fruit growers are trying to scl morc fruit 2.What is the percentage of people over 70 years old who domt eat fruitat al (7) About 20 % (7) About 30上% (⑫) About40 % (エ) Zem 3. Which of following describes the graph correctly? (⑦) Halfof women in their sixties eat more than 100 grams of fruit per day. (?) Less than a qarter of people in Bities emt more than 100 grams of fruit per dy (⑰) More than half the people below the age of 50 eat no fruit で) About twenty percent of people in their tventies eat more tham 200 grams of fruit per day。 4 Which of the following (7) Fruitis expensive for them (⑫) They want to keep their hands cleam. ror the reason why young people dOmt eat fi (① Fruitis not tasty ご) They cannot hinish eating fruit betore they go bad. YYhich sentence is correct about the articlef (ア) Watermelons and melons are stll popular amOng YOUng DcoDle. (?) Most Kiwi fruits and bananas are On in TaDaT. (⑦) Some farmers are promoting their fruit On rd Program エ) There are vending machines for fruit at eVery SL4iOh.

回答募集中 回答数: 0
英語 中学生

3、4、5番教えてください💦

の記を大以下の要回の答えを(ア)ー(エ)より選び記を符えなきい Young People cet cw fit than older people Some people say that young people "friues js that tree? Take a ook at iMis ablc Ths s mede by the Minidry of mltL Labor and Welfare。You cmn see how je fruit young eople er The reewon for this trend is simplk。 Mt | oumg pcople dont cat fruit becauwe they ae too cxpensive to cat every day。 Some young pcople say tbey dont et them beeuse iiey dnt want to get their hands diry or cciing them is a Tnuisance。Another rcnson 5 thatifyoung people ive by themsclves ir js difcultto nh eatng arge fuitssuch as atermeons or meions belore they "ro bad. Some kinds of fruit are sGll popular among young peoplc. The rmost or he fits are "imporred from other countrie clerwin japan are triing to change lessonsr to dlementary schooky Others sre promotng fruit on radio programs Anot Many fruit growers and fu ュ vending machine for fruit An apple cutter acked ut appkes at ome sattons It wil be intereving to we young people eat 半柱 *lees こかない *go bad 麻る。 wimport 得する 設問 1. Why are youmg people called "fruitlessT te Nmiary VHHkaNdL Labor and Water 厚生人 manufacture 半 Tr 人20I5和人 yare kiwi fits and banans_ However iion。 Some farmers olcr fruit ther interesting tril manufacturer introduced vending machines which we morc or lews fnit in the future knuikance うんきりすること の) Because youmg people don't eat much fruit (の Because young people dont grov fm (②) Because young people ike to cat ri (ご) Because many fruit growers are trying to scl morc fruit 2.What is the percentage of people over 70 years old who domt eat fruitat al (7) About 20 % (7) About 30上% (⑫) About40 % (エ) Zem 3. Which of following describes the graph correctly? (⑦) Halfof women in their sixties eat more than 100 grams of fruit per day. (?) Less than a qarter of people in Bities emt more than 100 grams of fruit per dy (⑰) More than half the people below the age of 50 eat no fruit で) About twenty percent of people in their tventies eat more tham 200 grams of fruit per day。 4 Which of the following (7) Fruitis expensive for them (⑫) They want to keep their hands cleam. ror the reason why young people dOmt eat fi (① Fruitis not tasty ご) They cannot hinish eating fruit betore they go bad. YYhich sentence is correct about the articlef (ア) Watermelons and melons are stll popular amOng YOUng DcoDle. (?) Most Kiwi fruits and bananas are On in TaDaT. (⑦) Some farmers are promoting their fruit On rd Program エ) There are vending machines for fruit at eVery SL4iOh.

回答募集中 回答数: 0