例題50についてです！！ 解説の3行目の丸しているところ(1)が なんで1になるのかがわかりません！！ ここに当てはまるのは、標準気体での 気体の体積だと思ったので、わたしは 11.2としたのですが何が違うのですか？？ 教えてください🙏🏻🙏🏻

例題50 逆滴定難 example problem 標準状態で11.2mLのアンモニアを0.10mol/Lの硫酸100mLに吸収させた。 残った硫酸を 0.10mol/Lの水酸化ナトリウム水溶液で中和した。 中和に要した水酸化ナトリウム水溶液の体積を 求めよ。 解答 15 mL ベストフィット Mom 010 「酸の出すH+の物質量」の和=「塩基の出す OH-の物質量」の和 解説 1 水酸化ナトリウム水溶液の体積をV[mL] とすると,量的関係は下図のようになる。 Jm 2 酸 硫酸の出すH+の物質量 0.10mol/Lx 10.0 1000 -L×2 3 x アンモニアの出す OH-の物質量 水酸化ナトリウムの出すOH-の物質量 塩基 ト AAA 11.2 V -Lx x1 1000 22.4L/mol 0.10mol/Lx- LX1 Jm021 * 1000 -LX- 4図の関係から次式がなりたつ。 11.2 5 1000 00.2 1 ×1 +0.10mol/L× 22.4L/mol V 1000 10.0 1000 -L×1=0.10mol/Lx -L×2 [[m よって、 よって,V=15mLである。 ③ ま

?の部分でなぜsin^2になるのですか、？

x>1におい よって、 1<a<c<bのとき f'(a)<fle ゆえに -=f'(c)(b-a) log b log a [I 31-e³ すな "dz=n 薬 23定積分 Example 23 ***** 自然数nに対し, In = cosxdx とするとき, 次の問いに答えよ。 (1)とそれぞれ求めよ。 (2) 自然数nに対し, In+2 を In で表せ。 (3) Ig で表せ。 [21 岩手大] ★★★★★ 119 次の定積 (1) S sin' (3) Soext- (5)Sill0g ME (1) = "" cosxdx-sinx=1 (1+cos2x)dx 1- cos'x dx=(1+cos =1/2x+1/12/sin2x=4 (2) In+2=2COS+2xdx=2(sinx)' cos”+1xdx [★★★★☆] 120α, B は となるの 121 (1) m (2)不定 (3) n Key 部分積分法によ ★★☆★☆★ =sinxcos**x] +(n+1) sin®x cosxdx り, In+2 を計算すると In, In+2 が現れる。 I =(n+1)(1-cos x) cos"x dx =(n+1)(In-In+2) よって したがって (n+2)In+2=(n+1)In In+2=n+1In (3)(2)の結果を用いると n+21 75 18=- = 86 256 よって π= 35 Key (2) の結果を繰り が成 (4)定 35 返し用いる。 -π 753 7.53 12= 864 8 6 4 4 256 Practice 23 ★★★☆☆ n=0, 1, 2, ...... に対し, In=Sxelaxdx とする。 (1)の値を求めよ。 (2)n≧1 のとき, In と In-1 の間に成り立つ関係式を求めよ。 (3) I3 の値を求めよ。 (4) JEB) *(sinxco (4)定積分 (sinxcosx) e3sinxdxの値を求めよ。 48 ++ VI ★☆★☆★ 122 ★★★☆☆ S 123 f (1) [類 19 摂南大〕

高校受験を控える弟の英語のテストなのですが、回答がなくて、どなたか回答案をくださりませんか？

7 次の(1),(2)の英文を読んで、それぞれの問いに答えなさい。 (1) ユタカ (Yutaka) とジョージ (George)は, 2人の住むみつば市 (Mitsuba City) について調査し,英語でプレ ゼンテーション(presentation)を行いました。 ユタカがスライド(slide)を使って発表をしています。 Hello, I'm Yutaka. I live in Mitsuba City and have lived there since I was born. There are some big parks in the city, and I often played in them with my friends when I was a child. I like my city very much. people than before. Look at Slide 1. Last month, I saw news about Mitsuba City on TV. It said that our city had fewer This shows the number of people in Mitsuba City. There were more than 300,000 people in 2000. The number became larger until 2010, but after that, it started to decrease. In 2020, about 280,000 people lived there. Why did the number of people become small? To find out the reasons, I read some books and checked some websites on the Internet. I got some ideas. Look at Slide 2. This shows the number of people in Wakaba City and Aoba City. These cities are next to Mitsuba City. You can see that these two cities had more people in 2020 than in 2000. In fact, Wakaba City started some plans to help parents in 2014. For example, parents don't have to pay money when they take their sick children to the hospital. This means parents can take care of their sick children ( A ) worrying about money. In Aoba City, a new train station was built in 2008. Since then, the city has more convenience stores, clothes shops, and restaurants. Living in Aoba City became more convenient, so more people started to live there. Look at Slide 3. You can see the number of each type of shop was larger in 2020 than in 2000. Now, Aoba City has become one of the most popular cities among people. Mitsuba City is a good city, but I don't think it has many attractive points. Parents still have to pay a lot of money to take care of their sick children. Also, there are not many shops and restaurants in the city. I think Mitsuba City should have more attractive points like Wakaba City and Aoba City. I want more people to live in Mitsuba City in the future. Slide 2 Slide 3 (people) 180,000 Covenience Stores 170,000 160,000 Clothes Shops 150,000 Restaurants 140,000 2000 2005 Wakaba 2010 2015 2020 --- Aoba (year) 0 10 20 30 40 50 (number) ■ 2000 m 2020 (注) be born 生まれる play 遊ぶ decrease 減少する in fact 実際は attractive 魅力的な find out take care of ~ news ニュース ~を探り出す ~ 〜の世話をする fewer より少ない website ウェブサイト convenient 便利な point -5-

こんばんは英作文の添削をお願いします！ たくさんの人の意見が欲しいです！ 1、2枚目が下書きでこの文章と点数です 最初で満点をとりたいのでchat GPTを交えて文を書き直しました。不自然な文があったら教えてください！ 明日の午後提出です！

I'm going to talk about an experience that changed my life Was when I studied studying abroad in Niseko, Hokkaido. I stayed for a total of 2 months last summer I made a lot of friends. and this summer. Speaking in both Japanese and English deepened our bond. Even after studying abroad we l are still in touch. We are going to have a reunion in Tokyo on Christmas Actually, I hadn't been good at English before I studied abroad. A friend of mine said "Don't be afraid ". Then to me •get rid of my weakness in English. I had a conversation with my I was able to native teacher in English through the activitities. In these activities, had a We did BBQ, cooked, and went sightseeing. It was d again, I would like to go skiing. lot of fun. If I could study abroad in Niseko to Niseko. You can enjoy Niseko's lifestyle Please yo m

You introduced us to some examples of Australian prehistoric paintings. ここに to がなぜ入っているのか教えてほしいです

When we asked one set of participants to estimate how much someone would like getting a cupcake simply for participating in a study, for ... 続きを読む

これの答えの書き方を教えてください🙇⋱

6-3 Q1. How do drones help farmers ? ドローンは農家をどうやって助けるか) No. Date Al. (種をまき肥料や農薬を畑に撒くことができる) Q2. How are drones helpful after disasters ? (災害時にドローンはどのように役立つのか) A2. (生存者を見つけることができる) Q3. How are drones used in many concerts and sporting erents? (多くのコンサートやスポーツイベントでドローンは、 A3 どのように使われているか) (より良いカメラアングル明アンゲルに使われている)

付箋で貼った２文がどうしてそのような訳になるのかわかりません。

た次の英文を読み, 設問に答えなさい。 (学習院 法学部 2022年) Society is everything. Many of us go through life thinking we are self-made and self-sufficient. Some may credit (or blame) their families for success or failure in life, but rarely do we think about (1) the bigger forces (that determine our destinies - the country we happen to be born in, the social attitudes common at a particular moment in history, the institutions that govern our economy and politics, and the randomness of just plain luck. These wider factors determine the kind of society in which we live and are the most important determinants of our human experience. 2 Consider an example of a life in which society plays a very (X) role. In 2004 I spent time with a family in the Ecuadorian Amazon*. Antonia, my host, had twelve children, and her oldest daughter was about to give birth to her first grandchild. They lived on the edge of the rainforest with no road, electricity, clean water or sanitation*. There was a school, but a considerable distance away, (Y) the children's attendance was irregular However, Antonia was a community health worker and had access via radio* to a doctor in a nearby town who could provide advice to her and others. Apart from this service (arranged by a charity), she and her husband had to be completely self-reliant gathering food from the forest, educating their children on how to survive in their environment. On the rare occasions when they needed something they could not find or make themselves (like a cooking pot), they searched for bits of gold in the Amazon, which they could exchange for goods in a market at the end of a long journey by boat. 3 This may seem like a very extreme and distant example, but it serves to remind us how accustomed we are to the things that living collectively gives us infrastructure, education and health care, laws that enable markets in which we can earn incomes and access goods and services. Antonia and her daughter promised to name the baby (they were Minouche, (2) which was a great honour. I often wonder what kind of life that other Minouche will be having as a result of being born in a very different society. V+ re expecting The way a society is structured has profound consequences for the lives of those living in it and the kinds of opportunity they face. It determines not just their material conditions but also their well-being, relationships and life The structure of society is determined by institutions such astical and legal systems, the economy, the way in which family and community life are organized. All societies choose to have some things left to individuals and others determined collectively. The rules governing how ? those collective institutions operate form what might be called the social contract, which 1 believe is the most important determinant of the kinds of lives we lead. Because it is so important and because most people cannot easily leave their societies, the social contract requires (Z) of the majority and necessary changes ás circumstances change. VF vf ⑤We are living at a time when, in many societies. people feel disappointed by the social contract and (3) the life it offers them. This is despite the huge gains in material progress the world has seen over the last 50 years. Surveys Social contract people

答えが2n^2+2n+1なのですが自分の計算では2n^2+2nになります。どこが間違っていますか？

15 [クリアーⅢIC Example9] 座標平面上の点であって,x座標, y座標とも整数であるものを格子点とよぶ。 0以上の 整数nに対して、不等式 x+nを満たす格子点(x, y)の個数を4, とおく。 さらに、 30 " x > e 6= 2 とおく。 次を求めよ。 k=0 g = - X + n (1) an (2) bn ne M ×70 十 + bn (3) lim 3 n-on 80 go 1=0 +1 14471=1 2 + -4 +8 =3 +12 nt (1) ht X (n+1)(n+1)-(n+1) 2 2 -ktn +ntl +n+2 t2n+2 1+4+8+12+ +4h thtl= nt3n+2 2 Intl. (n+1) (n+1) 2n²+6n+4-4h-4 2n2n 2 +ntl 2 1=3n+2x4 - 4(n+1)

(2)の場合分けの仕方がわからないです。なんでtから1の時と0からtのときに分けられるのですか？

Example 36 (1) tを定数とする。 xの不等式(1+t)x+t>0 を解け。 (2) 0≦ts1 のとき,f(t)=Sxー(1+1)x+tldx を求めよ。 解答 (1) x2(1+t)x +t0 から (xt)(x-1)>0 よって、この不等式の解は [類 08 早稲田大] Key tと1の大小関 係によって場合分けす る。 t<1 のとき x<t, 1 <x t=1 のとき x <1, 1 <x t>1 のとき x<1, t<x 答 2 のとき (1) の結果から [Key 絶対値記号の中 (x²-(1+t)x+t (0≦x≦t) の関数の正負によって |x2-(1+t)x+tl= (x-t)(x-1) (t≦x≦1) 積分区間を分ける。 ゆえに f(t)=Solx2(1+t)x+t/dx =S(ピー(1+1)x+1)dx-f(x-1)(x-1)dx x3 1 = [ ³ ³ ³ — — — — (1 + 1 ) x² + tx] = { — — — — (1-0)³} +3 3 = 1/32 - - 1 / (1+1) 1² + 1² + 1 = ( 1 − t)³ == 2 =-1/2 (21³-61²+31-1) 6