已知 298K 时的下列数据: BaCO 3 (s) BaO (s) CO 2 (g) △ f H m θ (kJ·mol -1 ) -1219 -558 -393 S m θ (J·K -1 ·mol -1 ) 112.1 70.3 213.6 试计算: ( 1 ) 298K 时 BaCO 3 分解反应的 △ r G m θ 、 △ r H m θ 及 △ r S m θ ; ( 2 ) 298K 时 BaCO 3 分解的压力。
【单选题】坐标变换的顺序非常重要,顺序的不同会导致完全不同的坐标,其正确的变换顺序是The order of rotations is very important, different order would result in a different orientation. The transformation sequence is
A.
先绕x轴,再绕y轴,最后绕z轴 first about the x axis, then the y axis, and last the z axis
B.
先绕z轴,再绕y轴,最后绕x轴 first about the z axis, then the y axis, and last the x axis
C.
先绕x轴,再绕z轴,最后绕y轴 first about the x axis, then the z axis, and last the y axis
D.
先绕z轴,再绕x轴,最后绕y轴 first about the z axis, then the x axis, and last the y axis