【简答题】Nomenclature of N 2 O 5
【简答题】Exercises for Nomenclature of Inorganic Compounds (I) CaBr2 CuCl Fe2O3 HF KCN N2O3
【单选题】Circle the correct nomenclature of the following structure
A.
N-2-[[[2-dimethylminomethyl]-5-furanyl] thio]ethyl- N’-methyl- 1-nitro - 1,1-ethenediamine
B.
N-2-[[[2-dimethylminomethyl]-5-furanyl]methyl]thio]ethyl-N’-methyl-1-nitro- 1,1-ethenediamine
C.
N-2-[[[5-dimethylminomethyl]-2-furanyl] thio]ethyl- N’-methyl-2 –nitro - 1,1 -ethenediamine
D.
N-2-[[[5-dimethylminomethyl]-2-furanyl]methyl]thio]ethyl- N’-methyl-2-nitro- 1,1-ethenediamine
【简答题】You may choose either of the following two passage and translate it into smooth English. Proper usage of vocabulary and accurate grammer as well as plentiful sentence structure are counted. 1. 放风筝是中国最...
【简答题】Nomenclature of the binary molecular compounds : CO 2 N 2 O 5 NH 3 PH 3 H 2 O 2 P 2 0 3 NO SO 3
【单选题】一侧肾脏体积缩小,且有瘢痕形成,最可能的诊断是( )