We briefly report results of an x-ray scattering study of particle-hole excitations in a cuprate insulator. The excitation spectrum shows a broad feature around 5.7 eV and a dispersive feature around 2.5 eV energy-loss. The low energy feature disperses upward about 0.8 eV along 〈110〉 having...
Compound Ca2CuO2Cl2 Evidence for Multiple Underlying Fermi Surface and Isotropic Energy Gap in the Cuprate Parent Compound Ca2CuO2Cl2Evidence for Multiple Underlying Fermi Surface and Isotropic Energy Gap in the Cuprate Parent Compound Ca2CuO2Cl2中国物理快报(英文版)...
Local Structural Properties Around Cu Atoms in Checkerboard Phased Ca2?xNaxCuO2Cl2NaCCOCCheckerboard phaseSuperconductivityEXAFSStructureWe examined the local structural properties of checkerboard phased Ca 2 x Na x CuO 2 Cl 2 ( T c =0, 15, 21, 27 K) using extended X-ray absorption fine ...
下列反应不属于四大基本反应类型的是 A. H2+CuO H2O+Cu B. Cl2+H2O = HCl+HClO C. Na2O+H2O = 2NaOH D. Ca(OH
解:A、2Cl2+2Ca(OH)2═CaCl2+Ca(ClO)2+2H2O,该反应的生成物是三种,且均为化合物,不属于置换反应,故选项错误. B、CO+CuO═Cu+CO2,该反应的反应物均为化合物,不属于置换反应,故选项错误. C、2Na2O2+2H2O═4NaOH+O2,该反应的反应物均为化合物,不属于置换反应,故选项错误. D、2Al+Fe2O3═2Fe+Al...
故答案为:KMnO4;K2SO4;Na2CO3;KCl;Cl2;Fe;H2;CuO;H2O;CO2;Ar;Fe3O4;Ca(OH)2;NH4NO3;MgCl2;NH4HCO3. 点评:本题主要考查化学式的书写,难度较大. 练习册系列答案 上海名师导学系列答案 八斗才名校直通车系列答案 中考冲刺仿真测试卷系列答案 单元评估AB卷系列答案 ...
这些化学式用汉字怎么表示单质:金属:K,Ca,Na,Mg,Al,Zn,Fe,Cu,Hg,Ag,Au稀有气体:He,Ne,Ar固体:C,P,Si,SH2,O2,N2,Cl2,Br2,I2.O3化合物:氧化物:H2O.SO2.P2O5.Fe3O4.CO2.NO2.MgO.CaO.HgO.CO.NO.CuO.Fe2O3酸:HCl.H2SO4.HNO3碱
常温下,下列各组物质中,X既能与Y反应又能与Z反应的是( )XYZ①CO2Ca(OH)2溶液H20②H2Cl2CuO③CuSO4溶液氢氧化钠溶液硝酸钡溶液④FeCuCl2溶液AlCl3溶液A. ①②B. ①③④C. ①③D. ①②③④
25.下列化学反应属于置换反应的是() A. CO+CuO =Cu+CO2 B. Cl2+H2O=HCI+HCIO高温 C. CaO+H_2O=Ca(OH) 2 D. 3
答案:A答案:A解析:④中Fe(OH)2不能通过一步反应转化成Fe。 相关推荐 1①CuCuSO4Cu(OH)2CuO②NaNaOHNa2CO3NaCl③Cl2Ca(ClO)2HClOHCl④FeFeCl3FeCl2Fe(OH)2 A. ①②③ B. ①③④ C. ②③ D. ①④ 2①CuCuSO4Cu(OH)2CuO②NaNaOHNa2CO3NaCl③Cl2Ca(ClO)2HClOHCl④FeFeCl3FeCl2Fe(OH)2 A. ①...