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【简答题】
下图为铜片与浓硝酸的反应装置示意图，据图回答下列问题 （1）写出试管内发生反应的化学方程式________________________ （2）描述在实验过程中观察到的试管内液体呈________色；试管内液体上方气体呈 ________色；集气瓶内收集到的气体呈________色。 （3）在反应一段时间后，从分液漏斗处向试管内加入蒸馏水，请描述加水后试管内和集气瓶内颜色的变化情况：试管内液体呈________色；试管内液体上方气体呈________色。
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皮皮学刷刷变学霸
举一反三
【单选题】Mr Black was driving fast to take his wife to a nearby hospital because their baby was ________.
A.
on its way
B.
in the way
C.
by the way
D.
out of the way
【简答题】transshipment
【简答题】In the middle of the night, Peter’s wife suddenly fell ill. She rolled from side to side, crying, “Oh, my stomach! Get the ___31___!” Peter thought his wife was only having a ___32___dream. “Stop that...
【简答题】The hospital bed is no longer o_______ by his wife.
【单选题】The barman's wife didn't go to bed ______. ( )
A.
until two o'clock in the morning
B.
because she wasn't sleepy at all
C.
because she was busy with her children
D.
because her husband hadn't finished working
【简答题】Transshipment
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