Homer-Wright菊形团常见于()
A.软骨母细胞瘤
B.脂肪母细胞瘤
C.肌成纤维细胞瘤
D.髓母细胞瘤
E.平滑肌母细胞瘤
参考答案:D
A.波长
B.频率
C.能量
D.波速
已知:O2(g) = O2+(g)+e- △H1= +1175.7 kJ·mol-1
PtF6-(g) =PtF6(g)+e- △H2= +771.1 kJ·mol-1
O2+(g)+PtF6-(g) =O2PtF6(s) △H3= -482.2 kJ·mol-1
则反应O2(g)+PtF6(g) = O2PtF6(s)的△H是 [ ]
A.77.6 kJ
B.-77.6 kJ·mol-1
C.+77.6kJ·mol-1
D.-886.8kJ·mol-1