质谱分析求解From the Mass Spectra below,what functional group does thiscompound have? What is the mass of this molecule?(assume all of thecompound spectra is present)实在是分析不出来,

质谱分析求解From the Mass Spectra below,what functional group does thiscompound have? What is the mass of this molecule?(assume all of thecompound spectra is present)实在是分析不出来, THE MASS the mass 质谱分析是什么? 化学质谱分析是什么 求解Find the center of mass of the solid between the spheres x2 + y2 + z2 = 1 andFind the center of mass of the solid between the spheres x2 + y2 + z2 = 1 andx2 + y2 + z2 = 9 if the density is proportional to the distance from the origin. 怎么利用质谱分析有机化合物? 质谱分析院士有哪些? 翻译 A great mass of rock had fallen from the cliff and now blocked the road. What are the influence on people from the gossip of mass media?还有,怎么回答? the mass 什么意思? 翻译“the mass-era ” 求The Mass歌词 The Mass 意义 .Welcome to the mass the mass 中文歌词 the graph shows the length of the spring increases as the mass suspended from the spring increases.翻译! ___rock had fallen from the cliff and now blocked the road.A.Masses of B.A great mass of C.A much mass D.A mass of 选哪个,为什么其他的不行.要区别!= =谢谢了