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化学 高校生

(2)の問題が分かりません 特に解説のイコールで結ばれた式がわかりません 比で教えていただけると助かります。

ひo moe 2|mol/L 3 濃度の換算 以下の各問いに答えなさい。g. 1cm3 例質量パーセント濃度が 63%の濃硝酸(密度 1.4g/cm°)のモル濃度を求めなさい。 解 この溶液1L中に含まれる硝酸の物質量を求めればよい。 この溶液1L1000cm°)の質量は, 63 1.4g/cm°×1000cm=1400g、硝酸 HNO。 (分子量 63)の質量は, 1400g× =882g 物質量は, (HOn4L(4009 =14mol 1L 当たり 14mol/の硝酸が含まれるので, モル濃度は14mol/Lo。オ,a 1400g) 100 1mulでク 882g 63g/mol Sて何mal? にmol メって 96 6、く 『>ト(-13 =チきく -96 (1) 0.20mol/L の希硫酸が密度は 1.05g/cm° である。この溶液の質量パーセント濃度(%]を求めなさい。 4mi1に 人asg HESOy. CA 00 そ笑、この aうとどa の合である「1Lをgにがしに どビmで付ね の麦れ8?いい、1 LIてO00 cm' (9.63 溶液器1レ2aるe 1レ:0.2mel: Lレ:メコ 溶夜のイなに Klo- 6asef (9.6 39.2 Ha。 2i 000cmg ミ 2 9? 1L→HS0) に0.2mul Ipli 989 0.2mo2 大9 九~ 19.6 (2) 2.0mol/L の硫酸 200mL をつくるときに必要な98%硫酸(密度 1.8g/mL)の質量を求めなさい。また, そ の98%硫酸の体積を求めなさい。Hes04 2mol: メmel. -47 2 1L 1050g 8いい 3ダ2 21 182 168 140 126 14 has -/ Imel、 %049 g) 298 x To0 2045 3 1meli mol の要 200 1 1mel こ 1mol 4mel、 6.04g- デmul.sg メー 38.816 a98 98. g, mL 要項の 78% P82 (ア)溶質 (イ) mol/L 19208 1208 5126.04 38.416 171607 (O

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英語 中学生

この線を引いてるところの②の問題で、2枚目の写真のエが正解なんですけど、なんでウではだめなんですか?! ※文章の流れ分からなくても大丈夫だと思います!!写真の全文読まなくていいです🙌🏻

water purification téChHIU teeth, or washing the dishes. We also use water when we take a bath or の Our toilet. We use water in many ways. I think it's as necessary as air. :I think so, too. be : People use water not only in daily life but also in agriculture and industry. In Japan, 66 percent of all water resources are used for agriculture, 19 percent for dailv life, and 15 percent for industry. :I'm surprised. I thought industry needed more water than the other two. Why is a lot of water used in agriculture? : Well, I think animals need much water. be : Yes, they need water, but most of the water in Japan. is for growing rice We see a lot of water in rice fields. be: That's right. Well, have you ever heard of virtual water trade? : No, I haven't. What is it? be: If we import agricultural and livestock products, we also import water used to produce those products. : Please give me an example. be : OK. Let's talk about beef, for example.(イ)私たちはオーストラリアで生産された午内と 食べます。 comes to Japan, water also comes. This is virtual water trade. Look at this tavio When farmers in Australia produce it, they use water. When the beef

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英語 高校生

問4① 彼らは少ない時間でより生産的になる、というのが仕事に対して言っていると特定できるのは何故でしょうか、、、?? 本文で生産的になるのが仕事のことしか言っていないからでしょうか??

第3回 実戦問題 73 Vou are going to have a debate about men taking parental leave. In order to prepare for the debate, your group is reading the article below. According t0 a recent survey, about 5.14% of new fathers in Japan Love taken parental leave. Over the years, the number of men who take 18u0 narental leave has grown, but it is still a big challenge for men to take it in male-oriented-Japanese society. So, here is my question: Do you think more Japanese men should take parental leave or not? Taking parental leave has one great benefit. If men take it for even a couple of weeks after the baby arrives, it is a great help to their wives. Most families are now nuclear families, so it is more difficult for couples with a new child to get support from their parents. Husbands can provide not only physical support but also mental support to their wives. Since new mothers face many unexpected situations every day, they can feel a lot of stress. Getting help is the key to reducing it. Another benefit is that parental leave is usually refreshing for men, allowing them to work more efficiently after they return to their jobs. On the other hand, there are reasons men should not take it. (First, during parental leave, they get no salary. This can put a lot of pressure on family finances. Second, many people are still against men taking it, which places psychological pressure on the men who do. What do you think about this issue? Ibelieve that when men take parental leave, it helps them understand how hard caring for a baby is. Knowing more about the hard work of their wives surely strengthens their relationship. Furthermore, when men eagerly raise their children, Tamily bonds become stronger. Nobody could argue that such things should be not be encouraged. 第3回 don

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