※ 引述《trowa1117 (各位观众.八.张.花)》之铭言： : Q.Which of the following would Not change by heating an ideal gas at a constant : volume ? : (A)density (B)kinetic energy (C)V/T (D)PV (E)P/T : 这题答案是(A)吗? : 因为我想来想去好像只有这个有关系???....对吗? -- from math ideal gas must obey PV =nRT,then we get P/T = nR/V = constant ,where V is fixed PV = nRT the other form is PM = DRT D = PM/RT , where P/T ,M and R are constants so the answers are A and E : Q.What is the number of unpaired electrons in low-spin [CoBr6]3- ? : (Z=27 for Co) : (A)0 (B)2 (C)4 (D)5 (E)6 Co = d7 7+3 = 10 even high spin,the answers are both the same : 这题呢...我是想假如 Co加上3个电子..可是我就不知道该怎麽继续下去? : 因为平常好像都是在算中心原子是A族的比较多... : 假如是B族的话我就不会了... : 希望板上高手能给我解答...谢谢大家^_^ --

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