A1.1×10-18
B2.8×106
在1mol·L-1的H2SO4溶液中,EθCe4’+/Ce3+=1.44V;EθFe3+/Fe2+’=0.68V;以Ce4+滴定Fe2+时,最适宜的指示剂为()
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用铈量法测定铁时,滴定至计量点时的电位是()(已知:Eθ(Ce4+/Ce3+)=1.44V,Eθ(Fe3+/Fe2+)=0.68V)
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The full title of the U.K. is the United Kingdom of ()and ()
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There are()NCSs in total, one in each ocean region, the AOR (E and W), IOR and POR.
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Between April and November, squalls()as Sumateras()in Malacca Strait in the late afternoon or overnight and()E to affect the W coast of Malaysia and Singapore Island.
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public and private colleges and universities and community colleges offer().
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已知:e=100sin(ωt-60°)V,t=0时,e等于()V。
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已知:e=100·sin(ωt-60°)V,t=0时,e等于()V
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已知:e=100•sin(ωt-60°)V,t=0时,e等于()V。
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