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Chemistry Senior High

【英語ですみません】最後の12番は何を書いたら良いのでしょうか…? Video C の実験では、aqueous solution にlead(ii) nitrate, aqueous solution にPottasium iodide を入れていました。 2KI (aq)... Read More

With lead (I) nitrate solution. This precipitation reaction produces a bright yellow solid. (point values in parentheses) Part 1: 1. Copy the unbalanced reaction below into your lab notebook. Balance the reaction by adding coefficients. (1) KI (aq) Pb(NO,), (aq) KNO, (aq) Pbl, (s) 2. a) Which trial are you assigned? b) Copy the data table below into your notebook. Watch video A (make sure it's the correct trial!) and collect your data. You may need to pause or rewatch the video, it goes quickly. (1.5) Mass of Empty Beaker (g) Mass of Beaker+ solid Pb(NO,)。(g) Volume of 1.0 M KI (aq) (mL) For the following calculations, show all your work for full credit. 3. What mass of solid Pb(N0,), was added to the beaker? (1) 4. If the solid Pb(NO,), was dissolved in 45 mL of water, what is the molarity of the Pb(NO,)。 solution? (2.5) 5. Which compound is the limiting reactant? (4) 6. What mass of lead (II) iodide (PbL,) should be produced? (2) Part 2: 7. Watch video B (make sure it's the correct trial!) to see the complete reaction and collection of the product. Copy the data table below and record your data. (1) Mass of filter paper (g) Mass of filter paper + dried precipitate (g) 8. What mass of precipitate was collected? Show your work. (1) Calculate the percent yield for the reaction. Show your work. (2) 10. For your trial, which three ions were present in the filtered solution at the end of the reaction? In other words, which three ions are still dissolved at the end of the reaction? Defend/explain your 9. answer. (3) 11. Watch video C - watch both tests for your trial and record your observations. (1) a) Add lead (II) nitrate - b) Add potassium iodide - 12. These tests were conducted to prove the identity of the limiting reactant. Considering your answers to the previous two questions, describe how these tests support the prediction you made in question 5 about which compound is the limiting reactant. (2)

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English Junior High

解答がなく困っています。 1枚でも大丈夫なのでわかる方、教えていただきたいです🙇‍♀️

します。 た す (文 合) g 口(1) Mike drinks milk. milk now. Mike 口(2) Jim swims in the sea. in the sea tomorrow. )01ile i e tioe down those trees next week.hghided Jim (3) Mr. Smith doesn't cut down those trees. Mr. Smith 口(4) She didn't play the violin. (文間) nab en the violin at that time. She したのrnd hetbg sr生oa 口(5) Did they sit under the tree? under the tree then? they 口(6) Do you have a party'? to have a party next Sunday? で表し、 生勝 本日の( you に適する語を書きなさい。 2 次の各組の英文がほぼ同じ内容を表すように Ken will do his homework after dinner. 口(1) ナoid do his homework after dinner. Ken Are they going to play baseball in the park this afternoon? 口(2) play baseball in the park this afternoon? Iwon't wait for her. 口(3) rus/to wait for her. は曲を here this afternoon. (株度 t lunch here. の に iea 同の原形) here tomorrow.jim tmonow gaiog Shall we have lunch here? 口(4) Ann will come here tomorrow. 口(5) Ann な 3 次の英文の に適する語を書いて, 対話文を完成させなさい。 A: Is Tom standing by the bench? (私はあしたジムをねるつもりはあ 口(1) B: Yes, A: Will Jane join our tennis club? B: No, A: 口(3) 29l B: Yes, please. carry your bag? fogtioo emoe evsd A: 口4) sing a song? B: Yes, let's. ght./OK./Yes. Iuwihm make a birthday cake for me? おしょうか」 と相 Sam doing?u. MO A: 口(5) Regadiern B: All right. に申し出るよき A: 口(6) B: He was running in the park. A: 口(7) うかと相手を消oddaensto mina is washing the dishes? B: Mary 14

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English Junior High

左が本文です  右が問題です この問題教えてください!!!

D回 日 時間 25分 実力問題 Step(3 次の英文を読んで、あとの問いに答えなさい。 Agriculture is very important. We have( A) many kinds of things, such as rice, fruits and vegetables, for a long time. Through agriculture, a lot of foods are produced, so we are able to have food every day. Agriculture is necessary for our lives in many ways. In Japan, today, more and more people are thinking about agriculture. One of the reasons is the safety of food. Some people ask, “Does this carrot come from our local area?” or “Is this cabbage s produced with agricultural chemicals?" Some people like to buy fruits and vegetables produced near their homes. It is called chisamatia in Japanese. This means “to consume the farm products in the area that has produced them” In the United States, they have the movement called Community Supported Agriculture (CSA) People give some money to the farmers ( B ) in their local area, and get fruits or vegetables from 1n them. In other words, consumers support the farmers in their own community. Chisanchisho and CSA have some good points for people. First, consumers know which farm the fruits and vegetables come from. Second, the fruits and vegetables are fresh and taste delicious because they are carried for a short time from farms to stores. In addition, consumers can choose the farmers who don't use agricultural chemicals. OSo (a chance for / give consumers / can / 15 getting better / of movements / these kinds) products. Farmers are also careful about the safety of food. Agricultural chemicals are used to protect fruits and vegetables from insect pests, but using agricultural chemicals too much is sometimes bad for people. So, some farmers are trying to produce fruits and vegetables( 2 ) agricultural chemicals. Instead of agricultural chemicals, they use some kinds of insects. 20 Plant lice are insect pests for vegetables. If farmers do not do anything, many vegetables wIll De eaten by them. So some farmers use ladybugs. Ladybugs like to eat plant lice. So the farmers nope that ladybugs will eat many plant lice. As a result, they don't use any agricultural chemicals. Through agriculture, we can get many foods from nature. So agriculture is necessary for our I When we think of our future, we should be more careful about our foods to improve our lives. 医 語句 agriculture 農業 chisanchisho 地産地消 fresh 新鮮な plant lice plant louse (アプラムシ)の複数形 vegetable 野菜 local 地元の agricultural chemicals 農薬 Community 地域社会 consume 消費する protect~~を守る insect pest 害虫 Consumer 消費者 insect 昆虫 ladybug テントゥムシ

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