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为了测定某种石灰石中碳酸钙的质量分数取5g石灰石样品放入烧杯中将60g稀盐酸分成四次加入烧杯中充分反应后测得实验数据如下表样品中的 Template






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sketch 4522 Adventure Time by KiNg Buamir
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tomski为了测定某种石灰石中碳酸钙的质量分数取5g石灰石样品放入烧杯中将60g稀盐酸分成四次加入烧杯中充分反应后测得实验数据如下表样品中的 coloring
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为了测定某种石灰石中碳酸钙的质量分数取5g石灰石样品放入烧杯中将60g稀盐酸分成四次加入烧杯中充分反应后测得实验数据如下表样品中的 sketch template
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某兴趣小组为了测定某石灰石样品中碳酸钙的质量分数取样品20g放于如图的一硬质大试管中高温加热完全反应后试管中剩余固体的质量为134g已知 sketch template
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小明同学为测定某石灰石中碳酸钙的质量分数将12克石灰石样品放入烧杯其中加入40克稀盐酸至不再产生气泡为止称量现总质量为476克．试 sketch template
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为了测定某种石灰石中碳酸钙的质量分数取5g石灰石样品放入烧杯中将60g稀盐酸分成四次加入烧杯中充分反应后测得实验数据如下表样品中的 sketch template
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题目某课外小组同学为了测定石灰石中碳酸钙的质量分数取某地石灰石样品90g于烧杯中将50g稀盐酸分5次加入烧杯中充分反应后杂质不与稀 sketch template
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化学兴趣小组为测定某石灰石样品中碳酸钙的质量分数取26g石灰石样品放在烧杯中然后其中逐渐加入稀盐酸使之与样品充分反应恰好完全反应时 sketch template
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题目某学生为了测定石灰石中碳酸钙的含量取10g石灰石样品经粉碎后放入烧杯中并加入足量的稀盐酸使其反应石灰石中的杂质不与酸生反应 sketch template
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某课外活动小组为测定当地石灰石中含碳酸钙的质量分数取来了一些矿石准确称取样品10g放入烧杯中杂质既不溶于水也不与稀盐酸反应也不分解 sketch template
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为测定某石灰石样品中碳酸钙的含量取100克于烧杯中再其中加入稀盐酸500克恰好完全反应反应后烧杯中物质总质量为567克．1 sketch template
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甲乙两学习小组准备测定某石灰石样品中碳酸钙的质量分数．它们分别采用了不同的测定方法．甲组同学的方法是将样品与稀盐酸反应测定反应后生成CO2 sketch template
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为了测定一批石灰石中碳酸钙的质量分数某化学兴趣小组同学按下列步骤开展实验首先将石灰石样品研成粉末然后取15g石灰石粉末与溶质质量分数10 sketch template
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某校化学课外活动小组为了测定某石灰石样品中碳酸钙的质量分数．取1250g样品放入烧杯中并加入足量稀盐酸假设其他杂质不参加反应不考 sketch template
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（8分）同学们对实验“煅烧石灰石”展开深入探究。 资料：石灰石中的杂质高温不分解且不与稀盐酸反应 （1）为证明石灰石已分解，三位同学设计方案 sketch template
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某校初三化学学习小组的同学前往某地的石灰石矿区进行调查他们取回矿石样品对样品中的碳酸钙的质量分数进行检测采用了以下的办法甲组同学测定 sketch template
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某化学兴趣小组为了测定某石灰石样品中碳酸钙的质量分数取用20g石灰石样品粉碎把250g质量分数为10%的稀盐酸分五次加入样品中样品中 sketch template
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为测定某石灰石样品中碳酸钙的含量取10g石灰石样品研碎加入烧杯中其中加入60g稀盐酸恰好完全反应杂质不参加反应不含碳元素反应 sketch template
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题目某化学兴趣小组为了测定一批石灰石样品中碳酸钙的质量分数取用2g石灰石样品把20g稀盐酸分4次加入样品中样品中除碳酸钙外其它成份 sketch template
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王明同学为测定某石灰石中碳酸钙的质量分数60g石灰石样品中逐滴加入稀盐酸至不再产生气泡为止共生成二氧化碳气体22g．试计算1 sketch template
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题目某课外小组同学为了测定石灰石中碳酸钙的质量分数取某地石灰石样品90g于烧杯中将50g稀盐酸分5次加入烧杯中充分反应后杂质不与稀 sketch template
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题目为测定某石灰石样品中碳酸钙的含量取样品10克于烧杯中加入稀盐酸50克恰好完全反应反应后烧杯中物质的总质量为567克1生成 sketch template
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某同学称取55g研碎的石灰石粉末分四次加入等量等质量分数的稀盐酸 称量剩余固体的重复操作．记录数据如下 操作次序 第一次 第二次 第 sketch template
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某化学兴趣小组为测定一种石灰石样品中碳酸钙的质量分数进行如下实验称取两份125g石灰石样品分别加工成块状和粉末状将两份样品分别 sketch template
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为测定某石灰石中碳酸钙的含量同学称取25g该石灰石放入烧杯再加入100g稀盐酸等到其中的碳酸钙全部反应后测知烧杯中剩余物的总质量为 sketch template
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题目某化学兴趣小组的同学为了探究石灰石中碳酸钙的质量分数做了如下实验取石灰石15克放入一个大烧杯中加入120克稀盐酸恰好完全 sketch template
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18．小红同学为了测定某矿山石灰石中碳酸钙的质量分数取20g石灰石样品与足量稀盐酸在烧杯中反应假设石灰石样品中杂质不与稀盐酸反应也不溶于水 sketch template
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某学校的学习小组对当地的石灰石矿区进行调查欲测定石灰石中碳酸钙的质量分数采用的方法如下取该石灰石样品16g把80g稀盐酸分四次加入 sketch template
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为了测定某地石灰石中碳酸钙的质量分数某同学取样品12 G放入烧杯中加入稀盐酸至恰好不再产生气体时消耗稀盐酸l00g石灰石中的杂质均不溶于 sketch template
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为了测定某石灰石中碳酸钙的质量分数假设杂质不参加反应且不溶于水某兴趣小组设计如下实验方案称取10g石灰石样品高温煅烧至质量不再 sketch template
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为测定某地石灰石中碳酸钙的质量分数某兴趣小组将一定质量的石灰石样品粉碎后分成两等份进行如下实验1一份放于烧杯中烧杯中逐渐加入某一 sketch template
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为了测定某石灰石中碳酸钙的质量分数假设杂质不参加反应且不溶于水某兴趣小组设计如下实验方案称取10g石灰石样品高温煅烧至质量不再 sketch template
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某化学兴趣小组的同学为测定石灰石样品中碳酸钙的含量杂质不溶于水也不溶于酸同学们取石灰石样品16克放入684克盐酸中测得物质总质量的 sketch template
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某学兴趣小组同学为测定一种石灰石样品中碳酸钙的质量分数组装了如图1的实验装置进行实验．称取质量为12克的石灰石样品将其与足量的稀盐酸 sketch template
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为了测定某石灰石中碳酸钙的质量分数假设杂质不参加反应且不溶于水某兴趣小组设计如下实验方案称取10g石灰石样品高温煅烧至质量不再 sketch template
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为测定某石灰石中碳酸钙的质量分数取222g石灰石样品放入盛有146g稀盐酸的烧杯中石灰石中的碳酸钙与盐酸均恰好完全反应杂质不反应 sketch template
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某同学为了测定磁铁矿石中铁的质量分数取该磁铁矿样品16g与足量的一氧化碳充分反应测得反应后固体物质的质量为128g．计算1根据 sketch template