高校化学「化学反応式と量的関係」「1.0molのZnと4.0molのHCl」
■問題
亜鉛Znと塩酸(HCl水溶液)の反応について、次の問いに答えよ。
Zn+2HCl→ZnCl2+H2
(1) 1.0molのZnと4.0molのHClを含む塩酸とを反応させると、Znが全て溶けた。残ったHClは何molか?
化学反応式から、それぞれの物質の反応する比率がわかりますね。
化学も「精講」シリーズは良いと思います。
■解説
化学反応式の係数は、反応する粒子の個数の比を表します。
問題で与えられた化学反応式は
Zn+2HCl→ZnCl2+H2
ですね。
この反応式から、ZnとHClは1:2の割合で反応することがわかります。
今回の問題では、反応するZnは1.0molなので、これと反応するHClは2.0molですね。
塩酸にHClは4.0mol含まれていたので、残ったHClは
4.0−2.0=2.0[mol]
江間淳の書籍はこちら
−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
20年以上の実績。全学年、英・数・理をはじめ全教科対応
最高級の指導を提供します!メール添削も好評です!
プロ家庭教師の江間です。 AE個別学習室(えまじゅく)
http://www.a-ema.com/k/ http://www.a-ema.com/j/
−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
2020年04月18日
本日配信のメルマガ。2020年センター英語第5問 完成
本日配信のメルマガでは、2020年大学入試センター試験英語第5問を解説します。
【高校英語】過去問攻略!センター英語
http://www.mag2.com/m/0001641009.html
■ 問題
第5問 次の文章を読み、下の問い(問1〜5)の[ 41 ]〜[ 45 ]に入れる
のに最も適当なものを、それぞれ下の{1}〜{4}のうちから一つずつ選べ。
A couple of weeks ago, I was hiking with my dog on a mountain when
something unexpected happened and I lost sight of him. I looked and looked
but couldn't find him. He had been with me for so long that it was like I
was missing part of my soul.
Ever since that day, I had a strange feeling. It was beyond sadness --
a feeling that I didn't quite understand, as if something were pulling me
to go back to the mountain. So every chance I got, I grabbed my backpack
to see if the mountain could offer me some sense of relief.
One sunny morning, I stood at the foot of the mountain. Something felt
different this day. "Please forgive me," I said out loud. "I'll find you!"
I took a deep breath and began my journey with this mysterious pull growing
stronger. After making my way along paths I thought I knew well, I realized
I was somehow in an unfamiliar place. I panicked a little, lost my footing,
and slipped. From out of nowhere, an elderly man came running towards me
and helped me up.
Looking at his gentle, smiling face, I felt a sense of ease. The old man
said he was looking for a way to the top of the mountain, so we decided to
climb together.
Soon the path began to feel familiar again. We talked about many things,
including my dog. I told him that he was a German shepherd. When he was
younger, he served briefly as a police dog but had to stop due to an
injury. The man let out a laugh saying he had been a police officer for
a short time, but he quit. He didn't say why. Later, he spent a long time
as a bodyguard. He also had German roots. We laughed at these similarities.
Before we knew it, we reached a large open area and took a break. I told
the man what had happened to my dog. "He had a tiny bell on his collar to
scare away bears. We came to this very spot and saw a bear. It was looking
back at us. I should have held my dog because, sensing danger, he chased
after the bear. I couldn't find him after that. I should have been more
careful."
As I was telling the story, the man's expression changed. "It wasn't your
fault. Your dog just wanted to keep you safe," he said. "I'm sure Tomo
would want to tell you this. Also, thank you for not giving up."
Tomo is my dog's name. Did I tell him this? The old man's comment [rang
in the air].
Before I could ask anything, the man proposed we hurry to get to the top
of the mountain. I was planning to do this with my dog a few weeks ago.
After two more hours of hiking, we reached the peak. I set down my backpack
and we sat taking in the magnificent view. The old man looked at me and
said, "Mountains offer truly magical experiences."
I looked around for a place to rest. I guess I was pretty tired, because
I fell asleep right away. When I woke up, I noticed that the old man had
disappeared. I waited, but he never returned.
Suddenly, in the sunlight, something caught my eye. I walked over and saw
a small metal tag beside my backpack. It was the same silver name tag that
my parents originally gave to my dog. Tomo it said.
It was then that I heard a familiar noise behind me. It was the ringing
of a tiny bell. I turned around. What I saw caused so many emotions to rush
over me.
After a while on the mountaintop, I attached the name tag to my old friend
and carefully made my way home with the mountain's gift beside me. My soul
felt very much complete.
問1 The author kept returning the mountain because [ 41 ].
{1} she felt an urge she couldn't explain
{2} she planned to meet the elderly man
{3} she thought she could practice magic
{4] she wanted to find out about the bear
問2 Which of the following happened first on the author's most recent
trip? [ 42 ]
{1} She arrived at a large open area.
{2} She climbed to the mountaintop.
{3} She saw a bear running away.
{4} She was assisted by an old man.
問3 What similarity between the author's dog and the old man was talked
about? [ 43 ]
{1} They experienced workplace injuries.
{2} They recently lost close family friends.
{3} They were acquaintances of the author.
{4} They worked to help protect the public.
問4 Which of the following is closest to the meaning of the underlined
phrase [rang in the air] as used in the text? [ 44 ]
{1} brought happiness
{2} left an impression
{3} make a loud noise
{4} seemed offensive
問5 How did the author's feelings change over the course of the last
hiking experience? [ 45 ]
{1} She was depressed and then became sadder.
{2} She was determined and then became comforted.
{3} She was hopeful but then became homesick.
{4} She was miserable but then became entertained.
※マーク部分の□は[ ]で、マル1は{1}で表記しています。
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
=========================== お知らせ1 ===============================
茨城県水戸市、常陸太田市、東海村の個別指導教室
「AE個別学習室(えまじゅく)」では、生徒募集をしています。
1クラス4人までの少人数で、経験豊富なプロ講師の授業が受けられます。
女性講師も指定可能です。対象は小学生〜高校生・浪人生。
1回の授業では、基本的に英語または数学の1教科を集中的に指導します。
1:1の授業をご希望の方への特別コースもご用意しています。
東海村教室では、全国大会経験者による指導が受けられる卓球教室の生徒も
同時募集しています。
勉強と卓球両方やる生徒さんには優待もあります!
興味をお持ちの方は、まずは mm@a-ema.com までお問い合わせください。
家庭教師・塾のサイトと連絡先はここ → http://www.a-ema.com/
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
■ 解答・解説
2020年第5問は物語文でした。
設問は、おおまかに言って、本文の内容の順番になっているので、まずは問いの
内容を把握して、それに関する記述があるまで読み進める。という取り組み方が
よいと思います。
問1 The author / kept returning the mountain / because / [ 41 ].
著者は / 山に戻り続けています / なぜなら / [ 41 ]
{1} she felt / an urge / she couldn't explain
彼女は感じた / 衝動を / 彼女が説明できない
{2} she planned / to meet / the elderly man
彼女は計画した / 会うことを / その老人に
{3} she thought / she could practice magic
彼女は思った / 彼女が魔法を練習できると
{4] she wanted / to find out / about the bear
彼女は〜したかった / 見つけ出すことを / そのクマについて
著者が山に戻る理由を問う設問となっています。この点に注意しながら本文を
読んでいきましょう!
A couple of weeks ago, / I was hiking / with my dog / on a mountain
/ when / something unexpected happened/ and / I lost sight / of him.
2,3週間前 / 私はハイキングしていた / 犬と / ある山で
/ 〜のとき / 予想しないことが起きた / そして / 見失った / 彼を
(以下略)
(有料版では、解説の続きや語句コーナー、解答一覧も掲載しています)
http://www.mag2.com/m/0001641009.html
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
=========================== お知らせ2 ===============================
ブログにて様々な問題を解説しています!
■ センター数学を理由の理由まで解説するブログ
http://centermath.seesaa.net/
■ センター英語をひとつひとつ解説するブログ
http://a-emaenglish.seesaa.net/
■ 何でも解説するブログ(塾&家庭教師ブログ)
http://a-ema.seesaa.net/
紙の書籍、電子書籍もご利用ください。
中学・高校の英語・数学の書籍を出版しています。
★江間淳(えまあつし)の書籍一覧 → http://amzn.to/2lnKZdS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
■ 全文訳(基本的に直訳ですが、一部意訳しています)
2,3週間前、予期しないことが起こり彼を見失ったとき、私はある山で飼い犬
を連れてハイキングをしていました。私は必死に探しましたが、彼を見つけられ
ませんでした。彼とは長い間一緒にいたので、私は魂の一部を失ったようでした。
つづき
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
解説の続きは、本日21時配信予定の
【高校英語】過去問攻略!センター英語
http://www.mag2.com/m/0001641009.html
に掲載します!
文法セクションはもちろん、第6問の長文まで、翻訳も行っている著者が、
全文訳・語句までイメージ重視&論理的に解説します。
月・水・土配信。\550/月。最初の1ヶ月は無料です。
ブログにもメルマガの記事を分割して掲載しています。
■ センター英語をひとつひとつ解説するブログ
http://a-emaenglish.seesaa.net/
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
------------------------------------------------------------------------
発行者 江間淳(EMA Atsushi)
mm@a-ema.com http://www.a-ema.com/k/ https://twitter.com/A_EMA_RYU
------------------------------------------------------------------------
無断転載・引用を禁じます。
=========================== お知らせ3 ===============================
5万人以上の利用実績がある勉強アプリ。英語・数学・化学など。
★印のものはGooglePlayでも公開中です。「江間淳」で検索してみてくださいね!
★【高校数学】読むだけでわかる!数学1Aの考え方
http://pmana.jp/pc/pm586.html
【高校数学】読むだけでわかる!数学2Bの考え方
http://pmana.jp/pc/pm743.html
【高校数学】読むだけでわかる!数学3の考え方
http://pmana.jp/pc/pm730.html
★【高校英語】センター試験徹底トレーニング
http://pmana.jp/pc/pm588.html
★【高校化学】読むだけでわかる!理論・無機・有機化学の考え方
http://pmana.jp/pc/pm603.html
【高校物理】読むだけでわかる!物理基礎・物理の考え方
http://pmana.jp/pc/pm729.html
【中学5科】高校入試の重要ポイント
http://pmana.jp/pc/pm707.html
【高校英語】過去問攻略!センター英語
http://www.mag2.com/m/0001641009.html
■ 問題
第5問 次の文章を読み、下の問い(問1〜5)の[ 41 ]〜[ 45 ]に入れる
のに最も適当なものを、それぞれ下の{1}〜{4}のうちから一つずつ選べ。
A couple of weeks ago, I was hiking with my dog on a mountain when
something unexpected happened and I lost sight of him. I looked and looked
but couldn't find him. He had been with me for so long that it was like I
was missing part of my soul.
Ever since that day, I had a strange feeling. It was beyond sadness --
a feeling that I didn't quite understand, as if something were pulling me
to go back to the mountain. So every chance I got, I grabbed my backpack
to see if the mountain could offer me some sense of relief.
One sunny morning, I stood at the foot of the mountain. Something felt
different this day. "Please forgive me," I said out loud. "I'll find you!"
I took a deep breath and began my journey with this mysterious pull growing
stronger. After making my way along paths I thought I knew well, I realized
I was somehow in an unfamiliar place. I panicked a little, lost my footing,
and slipped. From out of nowhere, an elderly man came running towards me
and helped me up.
Looking at his gentle, smiling face, I felt a sense of ease. The old man
said he was looking for a way to the top of the mountain, so we decided to
climb together.
Soon the path began to feel familiar again. We talked about many things,
including my dog. I told him that he was a German shepherd. When he was
younger, he served briefly as a police dog but had to stop due to an
injury. The man let out a laugh saying he had been a police officer for
a short time, but he quit. He didn't say why. Later, he spent a long time
as a bodyguard. He also had German roots. We laughed at these similarities.
Before we knew it, we reached a large open area and took a break. I told
the man what had happened to my dog. "He had a tiny bell on his collar to
scare away bears. We came to this very spot and saw a bear. It was looking
back at us. I should have held my dog because, sensing danger, he chased
after the bear. I couldn't find him after that. I should have been more
careful."
As I was telling the story, the man's expression changed. "It wasn't your
fault. Your dog just wanted to keep you safe," he said. "I'm sure Tomo
would want to tell you this. Also, thank you for not giving up."
Tomo is my dog's name. Did I tell him this? The old man's comment [rang
in the air].
Before I could ask anything, the man proposed we hurry to get to the top
of the mountain. I was planning to do this with my dog a few weeks ago.
After two more hours of hiking, we reached the peak. I set down my backpack
and we sat taking in the magnificent view. The old man looked at me and
said, "Mountains offer truly magical experiences."
I looked around for a place to rest. I guess I was pretty tired, because
I fell asleep right away. When I woke up, I noticed that the old man had
disappeared. I waited, but he never returned.
Suddenly, in the sunlight, something caught my eye. I walked over and saw
a small metal tag beside my backpack. It was the same silver name tag that
my parents originally gave to my dog. Tomo it said.
It was then that I heard a familiar noise behind me. It was the ringing
of a tiny bell. I turned around. What I saw caused so many emotions to rush
over me.
After a while on the mountaintop, I attached the name tag to my old friend
and carefully made my way home with the mountain's gift beside me. My soul
felt very much complete.
問1 The author kept returning the mountain because [ 41 ].
{1} she felt an urge she couldn't explain
{2} she planned to meet the elderly man
{3} she thought she could practice magic
{4] she wanted to find out about the bear
問2 Which of the following happened first on the author's most recent
trip? [ 42 ]
{1} She arrived at a large open area.
{2} She climbed to the mountaintop.
{3} She saw a bear running away.
{4} She was assisted by an old man.
問3 What similarity between the author's dog and the old man was talked
about? [ 43 ]
{1} They experienced workplace injuries.
{2} They recently lost close family friends.
{3} They were acquaintances of the author.
{4} They worked to help protect the public.
問4 Which of the following is closest to the meaning of the underlined
phrase [rang in the air] as used in the text? [ 44 ]
{1} brought happiness
{2} left an impression
{3} make a loud noise
{4} seemed offensive
問5 How did the author's feelings change over the course of the last
hiking experience? [ 45 ]
{1} She was depressed and then became sadder.
{2} She was determined and then became comforted.
{3} She was hopeful but then became homesick.
{4} She was miserable but then became entertained.
※マーク部分の□は[ ]で、マル1は{1}で表記しています。
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
=========================== お知らせ1 ===============================
茨城県水戸市、常陸太田市、東海村の個別指導教室
「AE個別学習室(えまじゅく)」では、生徒募集をしています。
1クラス4人までの少人数で、経験豊富なプロ講師の授業が受けられます。
女性講師も指定可能です。対象は小学生〜高校生・浪人生。
1回の授業では、基本的に英語または数学の1教科を集中的に指導します。
1:1の授業をご希望の方への特別コースもご用意しています。
東海村教室では、全国大会経験者による指導が受けられる卓球教室の生徒も
同時募集しています。
勉強と卓球両方やる生徒さんには優待もあります!
興味をお持ちの方は、まずは mm@a-ema.com までお問い合わせください。
家庭教師・塾のサイトと連絡先はここ → http://www.a-ema.com/
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
■ 解答・解説
2020年第5問は物語文でした。
設問は、おおまかに言って、本文の内容の順番になっているので、まずは問いの
内容を把握して、それに関する記述があるまで読み進める。という取り組み方が
よいと思います。
問1 The author / kept returning the mountain / because / [ 41 ].
著者は / 山に戻り続けています / なぜなら / [ 41 ]
{1} she felt / an urge / she couldn't explain
彼女は感じた / 衝動を / 彼女が説明できない
{2} she planned / to meet / the elderly man
彼女は計画した / 会うことを / その老人に
{3} she thought / she could practice magic
彼女は思った / 彼女が魔法を練習できると
{4] she wanted / to find out / about the bear
彼女は〜したかった / 見つけ出すことを / そのクマについて
著者が山に戻る理由を問う設問となっています。この点に注意しながら本文を
読んでいきましょう!
A couple of weeks ago, / I was hiking / with my dog / on a mountain
/ when / something unexpected happened/ and / I lost sight / of him.
2,3週間前 / 私はハイキングしていた / 犬と / ある山で
/ 〜のとき / 予想しないことが起きた / そして / 見失った / 彼を
(以下略)
(有料版では、解説の続きや語句コーナー、解答一覧も掲載しています)
http://www.mag2.com/m/0001641009.html
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
=========================== お知らせ2 ===============================
ブログにて様々な問題を解説しています!
■ センター数学を理由の理由まで解説するブログ
http://centermath.seesaa.net/
■ センター英語をひとつひとつ解説するブログ
http://a-emaenglish.seesaa.net/
■ 何でも解説するブログ(塾&家庭教師ブログ)
http://a-ema.seesaa.net/
紙の書籍、電子書籍もご利用ください。
中学・高校の英語・数学の書籍を出版しています。
★江間淳(えまあつし)の書籍一覧 → http://amzn.to/2lnKZdS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
■ 全文訳(基本的に直訳ですが、一部意訳しています)
2,3週間前、予期しないことが起こり彼を見失ったとき、私はある山で飼い犬
を連れてハイキングをしていました。私は必死に探しましたが、彼を見つけられ
ませんでした。彼とは長い間一緒にいたので、私は魂の一部を失ったようでした。
つづき
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
解説の続きは、本日21時配信予定の
【高校英語】過去問攻略!センター英語
http://www.mag2.com/m/0001641009.html
に掲載します!
文法セクションはもちろん、第6問の長文まで、翻訳も行っている著者が、
全文訳・語句までイメージ重視&論理的に解説します。
月・水・土配信。\550/月。最初の1ヶ月は無料です。
ブログにもメルマガの記事を分割して掲載しています。
■ センター英語をひとつひとつ解説するブログ
http://a-emaenglish.seesaa.net/
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
------------------------------------------------------------------------
発行者 江間淳(EMA Atsushi)
mm@a-ema.com http://www.a-ema.com/k/ https://twitter.com/A_EMA_RYU
------------------------------------------------------------------------
無断転載・引用を禁じます。
=========================== お知らせ3 ===============================
5万人以上の利用実績がある勉強アプリ。英語・数学・化学など。
★印のものはGooglePlayでも公開中です。「江間淳」で検索してみてくださいね!
★【高校数学】読むだけでわかる!数学1Aの考え方
http://pmana.jp/pc/pm586.html
【高校数学】読むだけでわかる!数学2Bの考え方
http://pmana.jp/pc/pm743.html
【高校数学】読むだけでわかる!数学3の考え方
http://pmana.jp/pc/pm730.html
★【高校英語】センター試験徹底トレーニング
http://pmana.jp/pc/pm588.html
★【高校化学】読むだけでわかる!理論・無機・有機化学の考え方
http://pmana.jp/pc/pm603.html
【高校物理】読むだけでわかる!物理基礎・物理の考え方
http://pmana.jp/pc/pm729.html
【中学5科】高校入試の重要ポイント
http://pmana.jp/pc/pm707.html
ラベル:英語
こんなヤツです
年齢:41
職業:プロ家庭教師、AE個別学習室(えまじゅく)代表、翻訳者
ウェブサイトURL:http://www.a-ema.com/
メールアドレス:j@a-ema.com
一言:アプリ、メルマガ、電子書籍提供中です。アマゾンやGooglePlayで「江間淳」で検索!
江間淳の書籍一覧 → http://amzn.to/2m9LTvN