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理科 中学生

理科の問題です。単元は気体の発生です。 ③の問題が分かりません。どのように式をたてれば3gと求められますか?回答よろしくお願いしますm(_ _)m

(1) ガラス容器a~eを用意し, それぞれに同じ濃さの塩酸を20cní ずつ入れ,電子でんびんで 全体の質量を測定した。次に質量1.0g, 2.0g, 3.0g, 4.0g, 5.0gの石灰石の粉末をガラス容器 a~eにそれぞれ加え, 十分に反応させた。このとき、ガラス容器a,bでは石灰石のすべて が反応してなくなり, c, d, e では石灰石の一部が反応しないで残った。その後,ふたたび ガラス容器全体の質量を電子てんびんで測定した。次の表は,その結果をまとめたものである。 これについて,あとの①~③の問いに答えなさい。ただし、発生した気体の質量については, 空欄にしてある。 ゆラ ガラス容器 b d a C e 20cmiの塩酸を入れたガラス容器全体の質量 [g] 8 83.6 85.1 83.5 85.9 84.4 |加えた石灰石の質量[g] s S8Amtsgd9 2.0 3.0 4.0 5.0 反応後のガラス容器全体の質量 [g] の| 84.2 86.3 85.7 39.1 88.6 発生した気体の質量[g〕 5品 0.4 08 0,8 0.8 08 ① 発生した気体の質量を, 表の空欄に書き込みなさい。 ② 石灰石を1.5gh加えるとすると, 何gの気体が発生するか。 め Co 9 ③ 加えた石灰石の質量が5.0gのとき, 石灰石はすべて反応しないで,いくらか残っている。 何gの石灰石が残っていると考えられるか。 3.0 60 8 10 g

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英語 高校生

答え合わせがしたいので教えてください

「I|次の文を読んで、あとの問いに答えなさい。( wのついた語は文末に注があります。 ns Sitting in the consultation room of a charming cosmetic surgery clinic in Washmgo. D.C., Hudson Young removed his mask under the satisfied gaze of his doctor. Like a grownns number of Americans, Young decided the right time to undergo plastic surgery was middle of a coronavirus pandemic, He knew he would have time to recover in the privacy ot his own home. The main reason, however, was that Young suddenly found himself face to face with his own image while participating in an increasing number of videophone and web A 「Its something new when you have to stare at your face for a couple of hours a day and there's only so much you can do with good lighting and good angles," Young said. The 52-year-old real estate agent had allready been a fan of cosmetic surgery. He had face lift, eyelid surgery and laser resurfacing for the first time in October. "When you see yourself on Zoom, you are shocked," he explained, as Dr. Michael Somenek examined his w barely visible scars. Young is far from the only one who has found himself disappointed with the reflection he has seen in the screen over the past year. Virtual consultations for cosmetic procedures have risen 64% in the United States since the beginning of the COVID-19 pandemic, according to the American Society of Plastic Surgeons. “We have seen an increase in the number of surgical cosmetic procedures that are directly related to Zoom," said Somenek, who has seen a 50% to 60% increase in customers. “I think the pandemic B has given everyone time to take care of those things that we've been putting off until later," explained Ana Caceres, who was able to work from home after C a plastic surgery operation she had wanted for a long time. She recovered at. her parents' house outside Washington after a December cosmetic surgery that helped her D deal with a source of insecurity she had had since adolescence. "I didn't have to days off, because I was still able to work from my bed with my lap-top," the 25-year-old said. “When life is going on and you have places to be, it's s0 easy to put things off," Caceres said, showing off a dress she says she now has the confidence to wear. And she has scheduled more cosmetic surgery. Her surgeon, Dr. Catherine Hannan, says consultations at her clinic in the IIS comit1 E have nearly doubled since the beginning of the pandemic. "Our patients have more lines because the last vear has been so hard. A face or boay change can have a psychological

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