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理科 中学生

中学理科の科学です! このページの⑵の計算問題?なんですが,やり方教えて頂きたいです(;;)

¥58 3.次の表は4種類の気体A~Dについて、 その性質をまとめたものである。 気体A~Dは, それぞれア かろい 同じ かる。 アンモニア, 二酸化炭素 水素, 窒素のどれかである。 また, 左の図は、 二酸化炭素を生成し, 確認 するための実験装置である。 次の問いに答えなさい。 H2 試験管 ① ガラス管 気 空気を1とした 体ときの重さの比 A 紙の色 青色リトマス 水10m²にとける気 体の体積(m²) 0.07 青 0.020 B/ 0.60 青 753 C 0.97 青 試験管② D 1.5 赤 0.016 0.94 CO2 ちっそ (20℃, 1気圧) アンモニア (1) くだいたチョークに食酢を加えると、 気体Dが発生した。このことから考えて、 このチョークに含まれている 元素は何ですか。 次のア~オから1つ選び, 記号で答えなさい。 ア. 炭素 工, 硫黄 イ. 水素 オ. 窒素 ウ. 塩素 ア (2) 水1cmにとける気体Cの質量は,気体Aの質量の何倍になるか。四捨五入して整数で答えなさい。 (3) 気体Bは何か, 化学式で書きなさい。 NH3 (4) 図の実験装置の試験管 ① ②には、それぞれ何を入れるか。 次のア~キから1つずつ選び、 記号で 答えなさい。 ア. 硝酸銀水溶液 エ. 塩化アンモニウム 力. 炭酸水素ナトリウム イ. 石灰水 ウ. 塩化コバルト オ. フェノールフタレイン液 キ. 過酸化水素水 ①カ ② イ (5) 図の実験で,ガスバーナーの火を消す前にしなければならないことを, 20字以内で書きなさい。 ガラス管を試験官からぬく

未解決 回答数: 1
英語 中学生

これの答えがないためだれか答えを教えてください‼️‼️よろしくお願いします🙇🏻‍♀️‪💧

[B] The Threat of Tourism As air travel gets cheaper, more and more people are visiting famous sites around the world. Although this increase in tourism brings economic benefits to the areas around these sites, tourists also cause unexpected problems. In particular, some famous works of art are being affected. This is because people's breath increases carbon dioxide and humidity levels. Gradually, these levels damage, old paintings and other works of art. One famous site facing this problem is the Sistine Chapel in the Vatican in Rome. The 500-year-old paintings, especially the famous ceiling by Michelangelo, are so popular that as many as 2,000 people may be viewing them at a time. In 1994, after noticing that the visitors' breath was damaging the paintings, the Vatican purchased an expensive air-conditioning system to protect them. However, the crowds continued to increase, so in 2014, the Vatican decided to limit the number of visitors to about 6 million a year. Another site that faces a similar problem is the Mogao Caves in Dunhuang, China. These caves are full of beautiful Buddhist paintings and sculptures that attract thousands of visitors every year. Many of the artworks are very old and, as with the Sistine Chapel, the carbon dioxide in the breath of visitors is gradually damaging them. Originally, 40 of the 400 caves were open to visitors, but this number was reduced by half in 2014. In addition, the number of visitors allowed into the caves has been greatly reduced. A different solution is being tried in the Ajanta Caves in Maharashtra, India. The caves also have many ancient Buddhist paintings in them, and these too are being damaged. In order to protect the paintings, visitors are quickly rushed through the caves. However, many visitors complained about the short time, saying they could not look at the paintings properly, so the local government built a visitors' center with exact copies of the caves. Visitors are allowed to study these copies for as long as they like. The local government hopes this will provide a good balance between protecting the paintings and giving tourists a good experience. (30) As the number of tourists increases, 1 unexpected economic problems occur among people living around famous sites. 2 the carbon dioxide and humidity in their breath harm the things they go to see. 3 air pollution caused by the carbon dioxide from airplanes increases. 4 people have trouble breathing because of the high levels of humidity. (31) In 1994, the Vatican 1 allowed only 2,000 tourists to look at its paintings by Michelangelo. 2 invited 6 million visitors to see its 500-year-old wall paintings on one day. 3 installed an air-conditioning system in order to make visitors more comfortable. 4 tried to reduce damage to its paintings by buying an air- conditioning system. (32) What is one thing that has been done to protect the Buddhist artworks in Dunhuang? 1 More of the Mogao Caves have been closed to visitors. 2016年度第2回 新試験 2 Visitors are being asked to avoid breathing too close to the paintings. 3 Some of the visitors are being taught new ways to preserve paintings. 4 The number of visitors has been reduced from 400 to 40 a day. (33) Why were some visitors to the Ajanta Caves unhappy? 1 The majority of the paintings have turned out to be copies. 2 There were not as many Buddhist paintings as they had expected to see. 3 They did not have enough time to look at the paintings inside the caves. 4 The long lines at the visitors' center have prevented them from seeing the paintings. 29

解決済み 回答数: 1
理科 中学生

(1)から(21)まで合っているかどうか教えてほしいです! あと間違ってるところが合ったら正しい答えも知りたいです。

イオン結晶・・・陽イオンと陰イオンの静電気的な引力 (クーロン力)による結合。 イオン結合でできた結晶をイオン結晶という。 ・組成式・ イオンからなる物質は陽イオンの正電荷と陰イオンの負電荷の総和がが ゼロ(電気的に中性) となるように一定の比で結びついている。 陽イオンと陰イオンの嘉数によって決まる。 陽イオンの価数×陽イオンの数=陰イオンの価数×陰イオンの数 組成式は陽イオン ・ 陰イオンの順に書く。 読むときは陰イオン・陽イオンの順 イオンからなる次の物質の陽イオンと陰イオンの数の比と組成式を書きなさい。 1 Na: C=1:1 NaCl (1) NaOH= (il (2)K+CI= {1 NaOH KCl (3) K+: Br= (l KBr (4) AgNO3= (= | (5) NH4+ Cr= (:| (6) Nat: HCO3= | | AgNO3 NH4Cl NaHCO3. (11) Mg2+ Cг= 2:1 (12) Ca 2+ : Cг= 2=1 (13) Cu2+ : OH¯ = 21 (14) Ca²+: HCO3¯=2=1 (15) K+ : SO4²¯ = (:2 (16) Na+ : CO²= (=2 (17) NH4+ SO2 = 1=2 (7) Ca2+ 02= |=| (18) Fe³+ : CI= 3=1 CaO (8) Ca2+ SO2 = (=\ (19) A1³+ : OH¯= 3=1 CaSO4 (9) Fe2+ SO2 = (= ( FeSO4 (10) Al3+ PO4 = (:( Al PO (20) A13+ SO4² = 32 (21) Ca2+ PO4 = 2:3 Mg Cla CaCl Cu(OH)2 Ca (HCO3)2 K2S04 NA2CO3 (NH4)2SO4 FeCl3 ALOH Al2(SO4)3 Ca3(PO4)2

解決済み 回答数: 2
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