学年

教科

質問の種類

化学 高校生

【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)... 続きを読む

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)

解決済み 回答数: 1
英語 高校生

至急お願いします🙇🏻‍♀️🙇🏻‍♀️

|2 次の文章は,日本文にあった「法」と「道徳」に関するものです。 読んだうえで設問に答え なさい。 When we think about the reach of the law, the first question is whether we have good reason to accept that the law has any proper authority | (ア)|all. (A) Why should we obey it? To a certain extent, the answer is implicit in the analysis of the “nature of law" question. (B) If law is held to be morally authoritative by definition, it will seem that an obligation to obey flows simply from the recognition of law as law. If the definition of law excludes this moral authority, the source of obligation must be sought elsewhere. The question about authority, however, is not as straightforward as this. What we are asking about is the kind of connection to be found (イ)| the authority of rulers to lay down laws and the legal and moral duty of the ruled to obey them. It is often asserted that there seems to be a general duty of obligation to obey the law. What (c) this means is that in the absence of special reasons which might justify a specific exemption, the acceptance of the duty of obedience presupposes the acknowledgement of the law's authority. (D) How it might lead to this, however, is a matter for debate. It may be for reasons quite independent (ウ)| the authoritative status of the law. The special reasons for suspending this presumption, furthermore, suggesting that there are limits to the general duty, must arise from considerations powerful enough to take priority over the standard reasons for obedience. 【設問】 (ウ) ずつ選びなさい。 I. (ア) に入る最も適当な語を, (a)~ (f)の中からそれぞれ1つ (イ) (ア)= ( へ (イ=( (ウ)= ( へ (a) of (b) on (c) of (d)from (e) at (f) between I. 下線部(C)の内容を日本語で簡潔に説明しなさい。 2

未解決 回答数: 1
英語 高校生

マイウェイ2の問題のやつです💦 答え教えていただきたいです

8 Lesson Exercises 1. 語い·表現 日本語に合うように( )内に適切な語を入れて、言ってみましょう。 1. おおまかに言えば、日本の人口は1億3千万人です。 ), the population of Japan is 130 million. 2.私たちは一緒に宿題をすると、 最終的におしゃべりすることになってしまいます。 )( ) chatting. When we do our homework together, we ( 3. 私たちは、その新しいレストランを見つけるのに苦労しました。 ) locating the new restaurant. We( 4.何百万もの人々が、 その万国博覧会を訪れました。 ) people visited the World Expo. )内の語句を適切な形に変えて、言ってみましょう。 2. 1. IfI( be not ) sleepy, I would read that book. 文法 2. If he ( study) the night before, he could have answered the questions. 3. If he ( be not ) sick, he would have attended the concert. 4. If Amy ( watch ) TV last night, she couldn't have finished the work. 3. 日本語に合うように( )内に適切な語を入れて、言ってみましょう。 文法 1. 索引がなければ、この本は使いにくいだろうに。 ) the index, this book would be difficult to use. 2. 私だったら、そんなことは言わないだろうに。 Iwould not say such a thing if I ( )you. 3. つづりの間違いがなければ、彼女の作文は完壁なのに。 But ( ) errors in spelling, her writing would be perfect. One More O Without ,I would (~がなければどうする?) 4. 日本語に合うように( )内の語を並べかえて、 言ってみましょう。 文法 1. 彼はどんなに忙しくても、毎朝ニュースを見ます。 (matter / busy/how/no )he is, he watches the news every morming. 2. あなたが何をあげても、彼女は喜ぶでしょう。 She will be pleased ( no / you/what/matter ) give. 3. いつ見ても、ナオミは幸せそうにほほえんでいます。 (see /I/ no /when /matter ) her, Naomi is smiling happily.

未解決 回答数: 1
英語 高校生

急ぎです💦答え教えていただきたいです。 ベストアンサーつけさせていただきます

8 Lesson Exercises 1. 語い·表現 日本語に合うように( )内に適切な語を入れて、言ってみましょう。 1. おおまかに言えば、日本の人口は1億3千万人です。 ), the population of Japan is 130 million. 2.私たちは一緒に宿題をすると、 最終的におしゃべりすることになってしまいます。 )( ) chatting. When we do our homework together, we ( 3. 私たちは、その新しいレストランを見つけるのに苦労しました。 ) locating the new restaurant. We( 4.何百万もの人々が、 その万国博覧会を訪れました。 ) people visited the World Expo. )内の語句を適切な形に変えて、言ってみましょう。 2. 1. IfI( be not ) sleepy, I would read that book. 文法 2. If he ( study) the night before, he could have answered the questions. 3. If he ( be not ) sick, he would have attended the concert. 4. If Amy ( watch ) TV last night, she couldn't have finished the work. 3. 日本語に合うように( )内に適切な語を入れて、言ってみましょう。 文法 1. 索引がなければ、この本は使いにくいだろうに。 ) the index, this book would be difficult to use. 2. 私だったら、そんなことは言わないだろうに。 Iwould not say such a thing if I ( )you. 3. つづりの間違いがなければ、彼女の作文は完壁なのに。 But ( ) errors in spelling, her writing would be perfect. One More O Without ,I would (~がなければどうする?) 4. 日本語に合うように( )内の語を並べかえて、 言ってみましょう。 文法 1. 彼はどんなに忙しくても、毎朝ニュースを見ます。 (matter / busy/how/no )he is, he watches the news every morming. 2. あなたが何をあげても、彼女は喜ぶでしょう。 She will be pleased ( no / you/what/matter ) give. 3. いつ見ても、ナオミは幸せそうにほほえんでいます。 (see /I/ no /when /matter ) her, Naomi is smiling happily.

回答募集中 回答数: 0