波線部の「塩化ナトリウムのように分子とよべるユニットが見当たらないような物質」とはどういうことでしょうか。

STAGE 3分子量と式量 の別冊 p.5~7 o 物質の元素構成を元素記号で表したものを化学式といいます。 原子が特定の chemical forimula みんし ぶんし 比率で結合してできた複合的な粒子を分子といい, 分子を表した化学式を分子 molecule molecular formula しき 式といいます。 例えば、水という物質を構成している基本粒子は, 水素原子2つと酸素原子 1つが集まってできた水分子で,分子式では H.O と表します。 『H.O』と書く 拡大 1は省略 また,ダイヤモンドのような超巨大分子や,塩化大トリウムのように分子と よべるユニットが見当たらないような物質を化学式で表す場合は, 一般に元素 の組成を最も簡単な整数比で表します。 これは組成式とよばれています。 そ せいしき Compositional formula ダイヤモンドは炭素1つ, 塩化ナトリウムはナトリウムと塩素1つずつで, 最も簡単な物質の組成単位なので, 次のように表します。 拡大 『C』と書く ダイヤモンド 拡大 『NaCl』と書く 塩化ナトリウム の結晶 原子量の値を用いて, 分子1個の相対質量や組成式1単位分の相対質量を表 したものを化学式量といい, 前者を分子量, 後者を式量といいます。 ぶん しりょう しきりょう molecular weight formula weight chemical formula weight 03 物質量 21

左が本文です　 右が問題です この問題教えてください！！！

D回 日 時間 25分 実力問題 Step(3 次の英文を読んで、あとの問いに答えなさい。 Agriculture is very important. We have( A) many kinds of things, such as rice, fruits and vegetables, for a long time. Through agriculture, a lot of foods are produced, so we are able to have food every day. Agriculture is necessary for our lives in many ways. In Japan, today, more and more people are thinking about agriculture. One of the reasons is the safety of food. Some people ask, “Does this carrot come from our local area?” or “Is this cabbage s produced with agricultural chemicals?" Some people like to buy fruits and vegetables produced near their homes. It is called chisamatia in Japanese. This means “to consume the farm products in the area that has produced them” In the United States, they have the movement called Community Supported Agriculture (CSA) People give some money to the farmers ( B ) in their local area, and get fruits or vegetables from 1n them. In other words, consumers support the farmers in their own community. Chisanchisho and CSA have some good points for people. First, consumers know which farm the fruits and vegetables come from. Second, the fruits and vegetables are fresh and taste delicious because they are carried for a short time from farms to stores. In addition, consumers can choose the farmers who don't use agricultural chemicals. OSo (a chance for / give consumers / can / 15 getting better / of movements / these kinds) products. Farmers are also careful about the safety of food. Agricultural chemicals are used to protect fruits and vegetables from insect pests, but using agricultural chemicals too much is sometimes bad for people. So, some farmers are trying to produce fruits and vegetables( 2 ) agricultural chemicals. Instead of agricultural chemicals, they use some kinds of insects. 20 Plant lice are insect pests for vegetables. If farmers do not do anything, many vegetables wIll De eaten by them. So some farmers use ladybugs. Ladybugs like to eat plant lice. So the farmers nope that ladybugs will eat many plant lice. As a result, they don't use any agricultural chemicals. Through agriculture, we can get many foods from nature. So agriculture is necessary for our I When we think of our future, we should be more careful about our foods to improve our lives. 医 語句 agriculture 農業 chisanchisho 地産地消 fresh 新鮮な plant lice plant louse (アプラムシ)の複数形 vegetable 野菜 local 地元の agricultural chemicals 農薬 Community 地域社会 consume 消費する protect~~を守る insect pest 害虫 Consumer 消費者 insect 昆虫 ladybug テントゥムシ

ここの構文と意味のとり方教えて下さい🙇‍♀️

a safe chemical with(the lowest boiling point 6f)any gas, which fhakes helium good for cooling medical equipment o extremely 16w temperatures. Helium is also used(in combinations of breathing gases for deep-sea diving replacing nitrogen gas, which can hake people'sick at high pressures. Helium is collected as a by-product of the oil and gas industry. In the 1920s, the US government began to store helium at the National Helium Center (NHC), to_use in military flying machines. By the 1960s, the US military had new uses for helium, such as cleaning fuel tanks for rockets. By the 1990s, the NHC was in enormous debt from storing helium, so a law was passed in 1996 forcing the NHC to sell all of its helium by 等、 2A15 no matter the market price

1.Parasitic wasps fly to the caterpillars and attack them. 2.Corn plants send out a chemical into the air. 和訳お願いします🙇🏻‍♀️🙇🏻‍♀️🙇🏻‍♀️

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How many sig figs does the number 300.0 have? 1 sig When zeros are at the right of the number: a) lf there is no decimal, the zeros are NOT significant. Example: 300 has 1 sig. www.pps.net) lib, Centricity> Domain> ib_sigfigs , DOC Rules for Counting Significant Figures

ライティングの添削をお願いします。アドバイスもらえると助かります！ （英検の過去問ですが特にpointは使ってません） Topic　Some farmers grow fruits and vegetables without using chemicals. Do... 続きを読む

答え4だったのですが何故ですか？

たo/@Ve/ YOの bee ]ast 200 years, people have begun to live longer and longer. This trend more_economnically developed countries。and for some time there Was a growng gap _between_the average_length of jife in rich countries and poor countries/Oyer the Dast few decades、however。 many Poor countries have also made improvements and they are now close to catching up with the wealthier ones. As a result every year there is a 8rowing number of older people in countries all over the world. It is a good thing that people are living longer, but it does have some diffcult aSpects. One of these is that more and more people are suffering from diseases aSsociated with getting older. The number of cases of high blood pressure, heart disease, cancer, and other inesses is increasing, In Australia, for instance。 a recent report said fhat people, on average, live 25 years longer than fhey did a hundred years ago.| Now, there are many more people suffering from serious illnessesOne consequence 3S that each year countries have to spend more and more on medical care foOr Older People. 4 IMany governments have begun to promote healthier lifestyles fo young people, such as losing weight and exercising regularly。as a Way to preventiSerious illnesses、 However as the body gets older, even people who haw have lived healthily are Hikely to become 井. Recentiy。research has begun 10 shoW that 了 this is the result of people's DNA gsetting older. When DNA breaks down, Important iR to control the body's functions is lost. Eventually, serious imesses mmay OCCUT However, David Sinclair,a researcher at the University oNew South Wales im Australia,、 is working on a way to keep DNA healthy。 He used a chemical called nicotinamide mononucleotide (NMN) to see 辻 he could reduce the efects of age on mice. Mice thaf were given NMN became stronger and healthier than they, had been Showing that the chemical was effective./He believes that one day this Lco both longer and make a medicine_for_hunaans. In this Way, Old people may be able to 1 healfhier lives.

30番が4番になるのが分かりません どこから分かりますか？

たo/@V@/ YOu/9 Over the 1ast 200 years, people have begun fo Hive longer. and longer. This trend began in the more economically developed countries。and for some time there was a growing gap_between the_average_length of life in rich countries and poor countries/Oyer the past few decades、 however, many Door countries have also made improvements and they are now close to catching up With the wealthier ones. As a result。 every year there js a growing number of older people in countries all over the World. It is a good thing that people are living longer, but it does have some df折cult aspects. One of these is that more and more people are suffering 所orn diseases aSSociated with getting older. The number of cases of high blood pressure, heart disease。 cancer。 and other illnesses is increasing/ m Australia, for instance, 2 Tecent rcpomt said fhat people, on average, live 25 years longer than they did a hundred ) ow。 there RY more people suffering from serious illnesses/One coi have to spend more and more on medical care for o Many governments have begun to promote as losing weight and exercising regularly, Sa as fhe body gets older, even people who have Recently, research has begun to show that 人 older. When DNA breaks down, inmportant inform lost. Eventually, serious illnesses may occuki 舞 However。 David Sinclair。a TeSe の Australia、is working on a way 0 nicotinamide mononucleotide (NMN) IMice that Were given NMNb that the chemical was effctive _make a medicine_for_hummans. healthier liVes.

問2までは無理矢理やったんですけど3からわからなくて。。。 1と2も間違ってたら指摘してください！

四 mez (表量のみ) 次の圏、回に答えなさい。 genetically modified food) 還 次の英文は ジョューンス先生(Mr Tones)がクラスの生徒たちと遺伝 子組み換え食品( と農薬(agricultural chemicals) について話している場面のものです。これを読んで 1 ーーーーで| There are toOo many people Kota : ] wat blems last night. mwatched a TV program about food proble mn in the future. liVing in the world, so there wont be enough food for all of the Saki : IT saw it,too、The food problems are more difficult than math problems. | Kota : 1 think farmers should produce more "CrODS. for people to eat. | Saki : My "parents are farmers、They say their job js to produce enough cropS TTP 。 | They wull also | Crops will die i there are *weeds around them or they have diSeaSe- | die if there are many bad weather days. | | Kota : Does that mean itS not easy to produce more crODS? SNSIT6S difficult。My parents always worry about their CrODS. ら 過 IMr Jones : Do you think genetically modified food wi help to produce HOTE CTODS: | Saki 1 dont know much about it. Mr.Jones : We have *genes that come from our parents. They carry informa lants, too. Short legs or long legs or black hair or red hair. GeneS are found in all animals and pla | Kota : My father has long hands and I have long hands, to0. tion about you,Such aS | IMr jones : And some *scientists put a gene into crops and it could make the croDS StrOngeT against |15 agricultural chemicals。 When farmers “spread the agricultural chemicals over their | genetically modified crops, weeds die but the crops dont | Eota : Thats greatl They will help your parents with their work. Sakt | Mr Jones : Butthere are some problems. People see fewer "honeybees In America now. Agricultural chemicals may be *killing them. Kota : Really? Honeybees put *pollen from one flower on another one to help it to *grow. Without honeybees, we wi not have fruits, *vegetables. and other plants. | ] Saki : We will die soon without food. And now in many parts of the world. (alot of / die / mare / children / because / there / who) there isnt enough food for them to eat. IKota : Yes, and *at the same time, there's a lot of *unsold or leftover food in restaurants. food |25 Ia | Stores, and even at home, Tlearned it when 1 watched the program last night. 1 couldnt believe there was more leftover food at home. Mr.Jones : Do you know a "food bank? There are many food banks in America. They *gather such food and give it to people *in need. Tread about it im the newspaper. There are some in japan、too. 1 hope all of us 30 each other and can eat enough food、 YYe should think of the best way to do so. 農家(の人) crop(s) 作物 parents 両親 weed 雑草 disease 病気 子 。 mformation 情報 scientist 科学者 spread まく honeybee(s) みつばち pollen 花粉 grow 育つ Vegetable 野菜 atthesametime 同時に - 売れ残り と食べ残しの食糧 "food bank フードバンク gather 集める 英記

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