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在500ml的烧杯中注入400ml热水并放入用硬纸圈圈住的一小块白磷在烧杯上盖一片薄铜片铜片上一端放一小堆干燥的红磷另一端放一小块已用 Template






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sketch 1964 愛鼠繪
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tomski在500ml的烧杯中注入400ml热水并放入用硬纸圈圈住的一小块白磷在烧杯上盖一片薄铜片铜片上一端放一小堆干燥的红磷另一端放一小块已用 coloring
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在500mL的烧杯中注入400mL热水并放入用硬纸圈圈住的一小块白磷在烧杯上盖一片薄铜片铜片上一端放一小堆干燥的红磷另一端放一小块已用 sketch template
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在500mL的烧杯中注入400mL热水并放入用硬纸圈圈住的一小块白磷在烧杯上盖一片薄铜片铜片上一端放一小堆干燥的红磷另一端放一小块已用 sketch template
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在500mL的烧杯中注入400mL热水并放入用硬纸圈圈住的一小块白磷在烧杯上盖一片薄铜片铜片上一端放一小堆干燥的红磷另一端放一小块已用 sketch template
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夏天小丽将冰水和热水分别注入常温下的两只透明烧杯中如图2所示一会儿现两只烧杯的杯壁上都有一部分出现小水珠变糊了。针对这一现象下列 sketch template
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2008年9月在国爆了三鹿牌婴幼儿奶粉受污染事件其原因是不法商人在奶粉中掺入了一种低毒性的化工原料 三聚氰胺C3H6N6．试根据 sketch template
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在托盘天平两端各放一只等质量的烧杯两只烧杯中分别注入相同质量相同质量分数的稀硫酸天平平衡．左盘烧杯中加入镁右盘烧杯中加入铁反应 sketch template
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