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化学 大学生・専門学校生・社会人

熱力学について質問です。 問題文の一定の外圧1.00atmをどう扱ったら良いかよく分かりません。自分でとりあえず解いてみたんですが合ってる自信あまりないです。もし分かる方いらっしゃいましたら、ご教授していただけませんか?🙇‍♂️

Problem 2 A sample consisting of 1.00 mol of perfect gas molecules at 300 K is expanded isothermally from initial pressure of 3.00 atm of a final pressure of 1.00 atm against a constant external pressure of 1.00 atm. Determine the values of q, w, AU, AH, AS, ASsur, and AStotal. 300Kにある完全気体 1.00mol の試料が、 温度一定で始めの圧力 3.00 atm から終わりの圧 カ 1.00 atm まで、一定の外圧 1.00 atm に抗して、 膨張する。 この過程に対して、9, w, AU,AH, AS, AS r, ASiosal を求めよ。 管品可運勝張より、Tが喫化しないためるリ=D 始めの体様をV終わりの体殊をソュとおくと. V, = 8.314× 300 スH- AU + PAV 1660 [コ] 1660 8.21×(o°[m] AS = = 5.53 [h] 300 ニ 3×1, 013 × /D" Vz = 8.314x300 1.013× [0 外界が理た熱置はdisur = -AHよ) = 0.0276 [m] ASsur- 「desur T 1660 300-5.53[7h] Pdv = -1.013 x /0°x (0.0246- 8.21Y16') - こ M AStotal こ AS + ASU- = -1660 LJ] AV= 9+ W より 1 - -w- 1660[5] 0 Problem 3 Calculate the change in the molar entropy at 1 atm when a solid ethanol at 159 K of the melting point changes

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英語 高校生

長文の問題なんですけど、下から2行目に答えの根拠があります。でもなぜ答えのようにthatから書き始めなくてはいけないのかわかりません。

C 次の文章を読み、問いに答えなさい。 Gi6bal warming is afNected by factories cars and other things that Gra aer ofdirty air keeps the heat from the sun in the earth's atmosphere ads to melting Oi mts are polar iC searchint the whole planet becomes warmer This global warming le: that causes problems for coastal areas. Governme the earth. 王 solar enerey begins to rise and uees that are safe and clean to stop the rapid warming of 器. One ofthe alternative aOurce8 所 asing Japan is reaching for ag in 2apan increseed rapidly in recent decades Wind power の incre: tricity during the nghttimne・ 半 ur country 了 k In fact 全omm solar energy wind power can make elee al energt nogy- J tecbnolo Geothermal energy is an energy source that can be found throughout Lural example of geot nermal ed alot of geothel 較 energy う oyerful sources 0 。 severaleounr tnerr mn ave poWer 8 3ts famous hot springs, or "ozse” (②This already using this energy for other purposes as well and has develo Another interesting energy Source is "wave' power Waves are / Ke / bighest /公r/ all / of Lthe al gy to practical use Britain is planning to Ne の y dont we use that pOWer? why dont we po ntae meane energy source by 2020.Since Japan is surrounded by sea SOjar wind, geothermal and wave power are aleo called (もrenewabl ai that the energy G6mes from resources that wil never run out. Introducing these alternat but also to sustain future development. Ourees is important not only to reduce global warming matiw we energy de are trying tO putYaVe ener

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