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【简答题】
（9分)(1)在标准状况下，①6.72 L CH 4 气体；②3.01×10 23 个 HCl气体分子；③13.6 g H 2 S气体；④0.2 mol NH 3 ，下列对这四种气体所含分子物质的量的关系从小到大的排列是(用上述数字序号表示)_______ ______________________________。 (2)粗盐经提纯后得到NaCl溶液，再经蒸发、结晶、烘干得精盐。 ①蒸发操作中使用到的仪器除铁架台(带铁圈)外，还需要的仪器名称为（写出三种）_________________。 ②该同学将所得精盐配成溶液，用于另一实验：实验中需要用60 mL 2 mol/L的NaCl溶液，配制过程中用托盘天平称取的精盐质量为________，该同学将精盐放在天平的右盘中称量好后，配制成溶液，则该溶液的浓度________2 mol·L －1 (填“＞”、“＜”或“＝”)。
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相关题目：
【单选题】Which of these sentences from “Lou's Place”best supports the idea that customers enjoythe unusual atmosphere at the coffee shop?
A.
“The bell at the door tinkles; two sleepy-eyed men in flannel shirts, work boots, and oil-company c
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B.
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B.
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D.
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查看完整题目与答案
【简答题】中华人民共和国人民法院是国家的检察机关。( )
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【判断题】中华人民共和国人民法院是国家的司法机关。()
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