[{"data":1,"prerenderedAt":182},["ShallowReactive",2],{"topic-page:\u002Fhigh-school\u002Fbasic-chemistry\u002Famount-of-substance-and-equations\u002Fmole-and-avogadro-constant":3},{"topic":4,"category":145,"seo":150,"breadcrumbs":155,"prerequisites":162,"nextTopics":174,"relatedTopics":181},{"id":5,"slug":6,"title":7,"summary":8,"canonicalPath":9,"categoryPath":10,"difficulty":11,"targetAudience":12,"estimatedMinutes":13,"generatedAt":14,"publishedAt":14,"updatedAt":14,"reviewStatus":15,"tags":16,"expectedKnowledge":22,"learningGoal":26,"blocks":27},"high-school-basic-chemistry-amount-of-substance-and-equations-mole-and-avogadro-constant","mole-and-avogadro-constant","モルとアボガドロ定数","原子や分子などの粒子をまとめて数える単位molと、1 mol当たりの粒子数を表すアボガドロ定数を学びます。","\u002Fhigh-school\u002Fbasic-chemistry\u002Famount-of-substance-and-equations\u002Fmole-and-avogadro-constant","\u002Fhigh-school\u002Fbasic-chemistry\u002Famount-of-substance-and-equations","beginner","student_high",6,"2026-07-28","ai_generated",[17,18,19,20,21],"化学基礎","物質量","モル","アボガドロ定数","粒子数",[23,24,25],"原子・分子・イオンの区別","科学的記数法","比例計算","数える粒子の種類を明示し、物質量と粒子数をアボガドロ定数で相互変換できるようになる。",[28,34,44,65,71,81,100,106,112,126,135],{"id":29,"type":30,"title":31,"subtitle":32,"shortDefinition":33},"hero","HeroBlock","見えない粒子をまとめて数える","1 molを化学の数え方として使う","1 molは、約6.02 × 10²³個の指定した粒子を含む物質量です。この1 mol当たりの粒子数を表す比例定数がアボガドロ定数です。",{"id":35,"type":36,"term":37,"definition":38,"plainExplanation":39,"keywords":40},"definition","DefinitionBlock","物質量とアボガドロ定数","物質量は粒子の集団の大きさをmolで表した量で、アボガドロ定数は1 mol当たりの粒子数です。","日常の1ダースが12個を表すように、1 molは極めて多くの粒子をまとめる単位です。ただし「粒子」が原子、分子、イオン、式単位のどれかを必ず指定します。O₂ 1 molはO₂分子が約6.02 × 10²³個であり、O原子はその2倍含まれます。",[41,42,43],"1 mol","約6.02 × 10²³個","数える粒子を指定",{"id":45,"type":46,"title":47,"lead":48,"formulas":49,"strategy":64},"formula","FormulaBlock","物質量と粒子数","粒子数Nは物質量nに比例します。",[50],{"label":21,"expression":51,"meaning":52,"symbols":53,"tip":63},"N = n × Nₐ","物質量nに、1 mol当たりの粒子数Nₐを掛けます。",[54,57,60],{"symbol":55,"meaning":56},"N","指定した粒子の個数",{"symbol":58,"meaning":59},"n","物質量（mol）",{"symbol":61,"meaning":62},"Nₐ","アボガドロ定数、約6.02 × 10²³ mol⁻¹","粒子数からmolへ戻すときはNをNₐで割ります。","最初に数える対象へ丸を付け、次にmolから個数なら掛ける、個数からmolなら割ると方向を決めます。指数部分も係数部分も別々に計算します。",{"id":66,"type":67,"src":68,"alt":69,"caption":70},"diagram","DiagramBlock","\u002Fassets\u002Fhigh-school\u002Fbasic-chemistry\u002Famount-of-substance-and-equations\u002Fmole-and-avogadro-constant\u002Fmole-particle-bundles.svg","1 mol、0.5 mol、2 molの粒子束とアボガドロ定数による粒子数の対応を示す図","1 molを約6.02 × 10²³個の粒子束として示し、0.5 molなら半分、2 molなら2倍になる比例関係を、粒子名のラベル付きで読み取ります。",{"id":72,"type":73,"title":74,"points":75,"body":80},"key-points","KeyPointBlock","計算前の3確認",[76,77,78,79],"物質量の単位はmol、粒子数の単位は個","1 mol当たり約6.02 × 10²³個という近似桁をそろえる","O₂分子数とO原子数のように対象を明記する","molから個数は掛け、個数からmolは割る","同じ1 molでも、化学式に含まれる原子数までは同じとは限りません。粒子の種類と化学式の下付き数字を分けて読みます。",{"id":82,"type":83,"columns":84,"rows":88,"summary":99},"compare","CompareBlock",[85,86,87],"指定","1 molで数えるもの","含まれるO原子",[89,92,96],[90,91,42],"O原子 1 mol","O原子 約6.02 × 10²³個",[93,94,95],"O₂分子 1 mol","O₂分子 約6.02 × 10²³個","約1.20 × 10²⁴個",[97,98,42],"H₂O分子 1 mol","H₂O分子 約6.02 × 10²³個","粒子束の数と、1粒子の中に含まれる原子数を二段階で考えると、下付き数字による倍率を落としません。",{"id":101,"type":102,"scenario":103,"explanation":104,"result":105},"example","ExampleBlock","CO₂分子0.250 molに含まれるCO₂分子数とO原子数を求める。Nₐは6.02 × 10²³ mol⁻¹とする。","CO₂分子数は0.250 mol × 6.02 × 10²³ mol⁻¹ = 1.505 × 10²³個で、3桁にそろえて1.51 × 10²³個です。CO₂分子1個にはO原子が2個あるので、O原子数はその2倍の3.01 × 10²³個です。","CO₂分子は約1.51 × 10²³個、O原子は約3.01 × 10²³個です。何を数えた答えかを単位の前に書きます。",{"id":107,"type":108,"warningTitle":109,"message":110,"severity":107,"action":111},"warning","WarningBlock","molをgへ直結しない","1 molが何gかは物質ごとのモル質量で変わります。ここで共通なのは粒子数だけです。また6.02 × 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