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研究盐类物质的性质时甲乙丙三位同学分别�nahco3溶液中滴加石灰水均产生白色沉淀．他们分别设计实验方案对自己过滤后的滤液中溶质的 Template






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sketch 2797 Homer by Na Ruro
sketch 5290 Kyuubi Jorge Valero
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sketch 5102 Old Man by Cuong Pham
sketch 4601 PSY Gentleman by Luis Daniel Sanchez Ramirez

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sketch 5158 Till Lindemann by Cristina Love
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sketch 2797 Homer by Na Ruro





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tomski研究盐类物质的性质时甲乙丙三位同学分别�nahco3溶液中滴加石灰水均产生白色沉淀．他们分别设计实验方案对自己过滤后的滤液中溶质的 coloring
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研究盐类物质的性质时甲乙丙三位同学分别NaHCO3溶液中滴加石灰水均产生白色沉淀．他们分别设计实验方案对自己过滤后的滤液中溶质的 sketch template
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题目如图所示是甲乙丙三种固体物质的溶解度曲线下列说法中正确的是 A丙溶液中混有量甲时可用降温结晶的方法提纯BT2℃时甲和 sketch template
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某化学小组同学完成盐的性质实验后处理废液时将过量的碳酸钠溶液与硫酸铜溶液混合现产生了蓝色沉淀小组同学在老师的指导下对该沉淀的成分进行了 sketch template
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水是重要的自然资源．1水是很好的溶剂．图2为甲乙两种固体物质在水中的溶解度曲线．曲线上P点的含义是t℃时甲乙两种固体物质的溶解度 sketch template
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在室温下甲乙丙三种固体分别溶于两支试管和一个烧杯的水中现象图1所示甲丙还有剩余固体乙固体全部溶解升温到80℃时现甲固体全部 sketch template
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为探究碱的性质进行如下实验．如图甲所示加入一定量的盐酸后溶液红色褪去溶液温度 填“升高 “降低 或“不变 ．如图所示 sketch template
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如图所示为甲乙两物质的溶解度曲线下列说法正确的是A甲的溶解度大于乙的溶解度B要使接饱和的乙溶液转化为饱和溶液可蒸溶剂Ct2℃时 sketch template
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在盐酸滴定NaOH溶液的实验中以甲基橙为指示剂滴到终点时的颜色变化是 A由黄色变红色B由黄色变橙色C由橙色变红色D由红色变 sketch template
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甲乙丙三种物质在水中的溶解情况与温度的关系如图所示1P点的意义为 2t1℃时将20g乙投入50g水中所得溶液质量为 3 sketch template
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28．下图甲是旧教材中验证铜与浓硝酸反应的装置乙是新教材对演示实验改进后的装置丙是某校师生对乙作进一步改进并对所产生的气体的性质进行探究的 sketch template
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1图一是甲乙两种固体物质的溶解度曲线图．现将两支分别装有甲乙两物质饱和溶液的试管底部均有量未溶解的固体浸入盛有水的烧杯中再 sketch template
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有甲乙丙三种属如果把甲和乙分别放入稀硫酸中乙溶解并产生氢气甲不反应如果把甲和丙分别放入硝酸银溶液中过一会在甲的表面有银析出 sketch template
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题目甲乙两同学分别对含 4价硫元素的物质性质进行了探究1甲用右图装置进行实验气密性已检验加热和夹持装置已略去实验进行一段时间 sketch template
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Ⅰ甲乙丙三位同学分别用如下实验装置及化学药品碱石灰为氢氧化钠和生石灰的混合物制取氨气．请你参与探究并回答问题1甲乙丙三 sketch template
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25．甲乙丙三种固体物质的溶解度曲线如右图所示由图可知 物质的溶解度随温度升高而减小t1℃时 物质的溶解度最大t2℃时甲乙两种 sketch template
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1甲乙丙三种物质的溶解度曲线如图1所示．将t1℃时甲丙的饱和溶液升温到t2℃则两种溶液中溶质的质量分数甲＞丙将t2℃时三种物质 sketch template
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如图1是甲乙丙三种物质的溶解度曲线．请看图回答．20℃时甲乙丙三种物质的溶解度由大到小的顺序乙＞甲＞丙图中A点表示的意义是40℃时 sketch template
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如图中各物质间的反应均在溶液中进行已知甲乙为化合物丙为单质．请根据图示关系回答下列问题1X的化学式是MgCl2．2CuCl2与 sketch template
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有甲乙丙三种物质已知甲为钾盐乙为盐酸盐丙为碱．经下列实验操作其结果分别是甲乙两种物质的溶液混合后无沉淀或气体产生2 sketch template
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如图1中ab是甲乙两种固体物质的溶解度曲线而在t1℃时等质量的甲乙两种固体物质在等质量的水中的溶解现象如图2所示．根据图1和图2回答 sketch template
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题目如图为甲乙两种固体物质的溶解度曲线下 列有关说法中不正确的是 A 60℃时100g甲溶液中含甲物质的质量小于60gB sketch template
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3．甲乙两种固体物质的溶解度曲线如图所示现有80℃时两者的饱和溶液各半烧杯且烧杯中各含有量甲和乙固体现将温度从80℃降到20℃下列 sketch template
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同学们在学习碱的化学性质时做了如下图所示的甲乙两个实验 写出乙实验的化学反应方程式 反应过程中产生的现象是 实验结——青夏教育精英 sketch template
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图1是甲乙丙三种固体物质的溶解度曲线图2是30℃时取其中两种固体各1g分别放进盛有10g水的两支试管中充分振荡后的溶解情况下列说法 sketch template
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图1是甲乙丙三种固体物质的溶解度曲线图2是30℃时取其中两种固体各1g分别放进盛有10g水的两支试管中充分振荡后的溶解情况下列说法 sketch template
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题目物质的性质决定其用途．下列因果关系不成立的是A．洗洁精具有乳化功能用于去除油污B．铁的活泼性比铝弱铁制品比铝制品在空气中更耐腐蚀C sketch template
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甲乙丙丁是四个形状体积 相同而材料不同的球体它们在水中静止时的情况如图所示其中所受浮力最小的是A．甲B．乙C．丙D．丁——青夏教育 sketch template
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整理物质间相互反应规律是重要的学习方法如图中连线两端的物质均能生反应．其中甲乙丙丁分别是ZnBaCl2溶液Na2CO3溶液和盐酸 sketch template
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甲和乙两种物质的溶解度曲线如图所示110℃时甲的溶解度比乙的溶解度小 240℃时在lO0g水中加入80g甲的固体充分搅拌后 sketch template
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甲乙两种物质的溶解度曲线如图所示．1图中A点表示的含义是在t1℃时甲乙两种物质的溶解度相同．2t2℃时将20g甲加入100g水中 sketch template
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如图是甲乙两种固体物质的溶解度曲线回答1t1℃时甲乙两曲线交点的含义是t1℃时甲乙两物质的溶解度相同．2t2℃时甲的 sketch template
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甲乙丙三种固体物质的溶解度曲线如图所示请回答125 ℃时将55 G甲固体加入到150 G水中充分溶解并恢复到原温度后得到溶液 sketch template
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水是很好的溶剂．如图2为甲乙两种固体物质在水中的溶解度曲线．曲线上P点的含义是t℃时甲乙物质的溶解度相等．某温度下分别盛有等质量 sketch template
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甲乙丙三种物质的溶解度曲线如图所示．根据图中信息回答下列问题120℃时甲乙丙三种物质溶解度由大到小的顺序为乙＞甲＞丙乙＞甲＞丙 sketch template
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右图是甲乙两种固体物质的溶解度曲线请回答甲物质在45℃时的溶解度为 甲乙两物质的溶解度相等时的温度是 ℃要使甲的不饱和溶液变为饱和 sketch template