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Chemistry Senior High

どうして[H₂O₂]は2乗にならないのですか?

10 5 (60)式と(62)式のように,反応物の濃度と反応速度の関係を表した式 を 反応速度式または速度式という。このとき,比例定数k, k′は rate equation 速度定数とよばれ,反応の種類が同じで、温度が一定ならば一定の値 rate constant となる。温度を変えたり,触媒を加えたりした場合には,速度定数の値 は変化する。 反応速度式は化学反応式の係数から単純に決まるようなものではなく, 実験によって求められるものである。 例えば, (58) 式の反応速度”は, 実験によって (63) 式のように表せることがわかっている。 ●参考 2H2O2 2H2O + O2 v" =k" [H2O2](k" は比例定数) -2乗ではない 問 14 A + 2B Cの反応がある。 Aの濃度だけを0.5倍にすると, 反応速度 は 0.5倍になった。 Aの濃度を0.5倍に, B の濃度を 1.5倍にすると, 反応 速度は0.75倍になった。 この反応の反応速度式を示せ。 参考 反応速度式の決定 参 p.145の と濃度を算出した。 ここで,平均の反応速度が平均の濃度に比例すると仮定する。 v = k c ( k は比例定数) で, 2H2O2 2H2O + O2 で表される反応の反応速度 このとき,各時間帯の についてんを求めると, その値 はほぼ一定となる (右表)。 時間 [s] 速度定数k [×10-/s] と求めることができる。 また, に対する をグラフに すると、右図のようになる。 これに したがって, 反応速度式はvk [H2O2] と決定でき, その値は 2.3 + 2.3 + 2.3 + 2.3 + 2.1 k= = 5 x 10™/s ≒ 2.3 x 10-2/s la [x1 (58) Op. 143 (63) X 1.6 1.4 1.2 10 0 30 60 90 120 150 2.3 2.3 2.3 2.3 2.1 絡

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English Senior High

日本語訳をお願いしたいです!!お願いします

次の英文を読んで、設問に答えなさい。 Everybody wants to eat delicious and safe food. However, exposure to different cultures reveals 2 how people's attitudes towards food safety and taste are not all innate or biological. Assumptions and practices regarding the preparation and presentation of food highlight the influence of culture on what and how people eat. For example, in one culture, some kinds of fresh ingredients might be considered edible (a), that is, without any kind of preparation like washing, peeling or heating. Yet in another culture, the same foodstuff may require some kind of preparation before it can be eaten. It is often difficult for people from the same culture to view such activities and beliefs objectively, and so witnessing the food practices of other cultures can be surprising. Sashimi is a great example of this. While sashimi may be the result of several steps of preparation from cleaning and cutting, to a particular style of presentation - heating is not one of these steps. (2)Japanese consumers take it for granted Cultures, the conventional belief may be that real and fish require some sort of cooking, such as baking or frying, (3) in order (b) them to be considered edible. In these cultures, sashimi is not thought of as raw, delicious and safe to eat, but rather as uncooked, and therefore possibly unsafe to eat, regardless of how it may taste. Fresh chicken eggs are another raw foodstuff commonly eaten in Japan — as a topping for rice, or as a dipping sauce for sukiyaki, for example but most people in the UK or the USA believe that chicken eggs require some kind of heating before they are fit for human consumption. However, the ways in which people from other cultural backgrounds eat certain foods might be considered equally unconventional by many Japanese. For example, few Japanese would eat the skin of apples or grapes. In this case, the difference involved in the preparation of the food is not the use of heat, but the removal of part of the foodstuff. People in much of the world eat apples and grapes without peeling them. A European might think, What could be more healthy and delicious than picking an apple from the tree and eating it?' But this way of thinking is not shared by a large number of Japanese. (4) It is clear that different cultures have different conventions regarding the preparation of particular foods, and different beliefs about what is considered delicious. However, there is no question that some common food preparation practices - or sometimes a lack of certain food preparation processes - are unsafe from a scientific point of view. However delicious they may be, raw meat and fish can contain the eggs of harmful parasites like tapeworms, which are often undetectable. If chicken eggs are not properly stored, and are left unconsumed for a long time, they can easily produce bacteria like salmonella. The poisoning caused by salmonella does not usually require hospitalization, but it can be very dangerous for young children and elderly people. In addition, while eating the skin of apples and grapes may be a good source of dietary fiber, one also runs the risk of consuming insecticides, the poisons that are used to protect many non-organically farmed fruits from insects. So, while there may be 'no accounting for taste' beyond culture, safety is a different issue, and (5) we should always be aware of the risks involved with culturally accepted methods of food production and consumption. 問1 下線部 (1)で,空欄 ( a )に入る最も適切な語句を, (A)~(D)から選び, 記号で答えなさい。 (A) as is clear (B) as is fresh (C) as they are (D) as unclean 問2 問3 問4 問5 下線部(2)を日本語に訳しなさい。 下線部 (3)の空欄(b)に入る語(1語) を書きなさい。 下線部(4) を日本語に訳しなさい。 下線部 (5)の理由として最も適切なものを, (A)~(D) から選び,記号で答えなさい。 (A) Eating raw chicken eggs or unpeeled fruits can be dangerous in certain conditions because of harmful bacteria or pesticides. (B) Eating unpeeled apples or grapes may cause weight gain. (C) Only young children and elderly people are vulnerable to particular bacteria. (D) Beliefs about what is considered delicious actually come from better understanding of food preparation. 問6 本文の内容と一致するものを, (A)~(G)から3つ選び,記号で答えなさい。 (A) By food preparation processes, the author exclusively means the use of heat. (B) Culturally established ways of consuming food may conflict with scientific principles of food safety. (C) In some food cultures outside Japan, fish in its raw state is not categorized as an edible foodstuff. (D) People having little contact with other cultures tend to view their own food-related conventions as natural and standard. (E) Repeated exercise is required for the mastery of any food preparation. (F) Instinct alone determines what and how people eat. (G) All cultures around the world consider it natural to eat unpeeled fruit.

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English Senior High

空欄Aのとこなんですけど選択肢にwhereasとyetがあってその二つの違いがわかんないです 早稲田教育英語2012の大問2です

from injuries due to falls. Poor vision accounts for 18 percent of broken hips. So, why don't more people get regular eye exams? For one thing, eye exams in the United States are not covered by public nor by many private health insurers. Even the new U.S. health care law has yet to include basic eye exams and rehabilitation services for vision loss, though advocates are pushing hard for this coverage in regulations now being prepared. But even those who have insurance or can pay out of pocket are often reluctant to go for regular eye exams. Fear and depression are common impediments for those at risk of vision loss. Patients worry that they could become totally blind and unable to go partying, read or drive a car, he said. [A] many people fail to realize that early detection can result[] vision-preserving therapy. Those at risk include people with diabetes, high blood pressure, high cholesterol or cardiovascular disease, as well as anyone who has been a smoker or has a family history of an eye disorder like macular degeneration, diabetic retinopathy or glaucoma. The eyes are truly a window to the body, and a proper eye exam can often alert physicians to a serious underlying disease like diabetes, multiple sclerosis or even a brain tumor. Mr. Lovett recommends that all children have "a professional eye exam" before they start elementary school. "Being able to read the eye chart, which tests distance vision, is not enough, since most learning dhe is whild de adequate

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