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化学 高校生

[至急]大門3の(2)(3)教えて欲しいです!

10 (3) gを溶かして10%の水溶液をつくったとき,こ の水溶液は何gになるか。 (2) (3) 溶液 で 15 モル濃度 次の問いに答えよ。 (1) グルコース C6H12O6 90gを水に溶かして, 250mLの水溶液をつくった。 この溶液のモル濃度は何mol/Lか。 (2) 酢酸 CH3COOH 30g を水に溶かして, 200mLの水溶液をつくった。 こ の溶液のモル濃度は何mol/L か。 (3) 0.10mol/Lの水酸化ナトリウム NaOH水溶液 200mLには,何mol の NaOH が溶けているか。 (4)食酢は 0.70 mol/Lの酢酸 CH3COOH 水溶液である。食酢 100 mL 中に は何gの CH3COOH が含まれるか。 3 濃度の換算: 質量パーセント濃度からモル濃度 市販のアンモニア水(質量パーセント濃度28%, 密度 0.90g/cm²) について, 次の問いに答えよ。 溶液のモル濃度 (r (1) 溶質の物質量( (2) (3) 溶液の体積 (4) 密度(g/cm 20 (1)このアンモニア水 100gに含まれるアンモニア NH3 の物質量は何molか。 (1) (2)このアンモニア水 100gの体積は何Lか。 (2) (3)このアンモニア水のモル濃度は何mol/L か。 (3) 4 濃度の換算:モル濃度から質量パーセント濃度 0.80mol/Lの硫酸H2SO4 (密度1.05g/cm²)について,次の問いに答えよ。 (1) この硫酸100mL に含まれる H2SO4の質量は何gか。 (2) この硫酸の質量パーセント濃度は何%か。 HCNONa Mg Al Si SCI KCa Fe Cu Zn Ag I Pb 1.0 12 14 16 23 24 27 28 32 35.5 39 40 56 63.5 65 108 127 207 (2)

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英語 高校生

横線部の〈where〉は関係副詞でしょうか。解説もお願いします🙇

dangerous places. He thought, "Even if people cannot see, their feet can feel the difference of the surfaces. (3) This will warn them of danger." In 1965, after many trials and errors*,/he created some samples with his own money. 15 He gave these samples to the local government. In 1967, 230 of his blocks were placed in front of an intersection* in Okayama City, Japan. These These were the world's first Braille Blocks. 3 Over time, the use of Braille Blocks spread in Japan, and then around the A-49 world. However, accidents sometimes happened where the blocks had not 20 yet been placed. Local governments and railroad companies quickly started to place the blocks in dangerous areas. As a result, many organizations made the Tenji Blocks with their own designs. This caused some confusion. In 1996, the Japanese government started research to make standards for the Tenji Blocks. A team of scientists and 60 people with vision problems 25 worked together to find the easiest ( A ) to use. Then, in 2001, the standards were finally made. still 4 Although the designs have been standardized, there are (4)many problems. We still see various types of old blocks. They must be replaced with new standard blocks as soon as possible. In addition, the standards do 30 not say the color or material to use, or how to place the blocks. A-50 In March 2012, the ISO* (International Organization for Standardization) A-51 32

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英語 高校生

7行目の文の文構造教えて欲しいです🙏

25 The Maya loved cacao so much they used the beans as currency. They also believed it is good for you which many people still say today about cacao's most famous byproduct, chocolate. 物 In fact, cacao, also called cocoa, which is the not-so-secret ingredient of chocolate, s contains hundreds of bioactive* plant compounds, including flavanols*, which have with numerous possible health benefits. been (あ "Research on the bioactive components of the cacao bean pretty consistently shows that if you're consuming greater amounts of flavanols you see mechanisms (linked to heart disease are, by and large, favorably impacted," says Howard Sesso, an 10 epidemiologist at the Harvard T.H. Chan School of Public Health and Brigham and Women's Hospital. This includes improvements in blood pressure and cholesterol levels. But while cacao does have intriguing potential to boost heart health and brain function, no science supports eating large amounts of chocolate as a health food 15 sorry chocoholics. Here's why. - Spurred by chocolate's popularity, numerous studies have explored how the natural chemical compounds found in cocoa might be good for human health. While some have suggested that less than an ounce of dark chocolate might 本単位 VT improve heart health, much of the research doesn't involve eating actual chocolate not A but rather BAというよりむしろB 20 but rather its components. In 2022, (2) Sesso and colleagues found compelling evidence for the benefits of 説得力のある flavanols. In a clinical trial of 21,000 adults, they found that the half of the group that took 500mg of cocoa flavanol supplements daily had a significantly lower risk of death from cardiovascular disease* than those who had taken a placebo. Flavanols may also boost insulin sensitivity, according to some studies, which might be helpful in reducing the risk of type 2 diabetes. But the results aren't conclusive, and those at risk of diabetes might be () (to choose a cacao-inspired

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