尿素的结构简式是 A、 B、H2N-CO-NH2 C、HO-CO-OH D、Cl-CO-Cl 点击查看答案进入小程序搜题 你可能喜欢 在海报中占有主要版面的色彩就是整个海报的【 】。 A.背景色 B.基调 C.主体色 D.氛围色 点击查看答案进入小程序搜题 慢性粒细胞白血病患者的正确护理不包括 A.注意观察有无脾脏破裂征象 B.定期...
To calculate the oxidation numbers for HOCH2CH2CHCH3CH3, count the number of atoms, draw the lewis structure by adding bonds, assign electrons from each bond, and count the number of electrons assigned to each atom. Count Atoms Use the chemical formula, HOCH2CH2CHCH3CH3, to count the numbe...
For the following compound, identify any polar bonds and determine if the structure is polar (explain why or why not). CH_3ClFor the following compound, identify any polar bonds and determine if the structure is polar (explain why or why not). NH_3For the f...
To calculate the oxidation numbers for HO3Cl, count the number of atoms, draw the lewis structure by adding bonds, assign electrons from each bond, and count the number of electrons assigned to each atom. Count Atoms Use the chemical formula, HO3Cl, to count the number of atoms of each...
多巴胺是一种神经传导物质,其合成路线如下所示下列说法错误的是O OHO OH一定条件OH HO NH HO NH2I -酪氨酸L-多巴HO CO HO NH,多巴脱羧酶多巴胺 A.L-酪氨酸分子中所有碳原子可能共平面 B. I mol L -多巴最多可以与4 mol H,发生加成反应 C.多巴胺可与 FeCl_3 溶液发生显色反应 D.L-酪氨酸、L-...
23.空气是宝贵的自然资源,下图是以空气等为原料合成尿素 [CO(NH_2)_2 ]的流程。请按要求回答相关问题:HO H↓NH3合成X →转化CO(NH2)2低温加压)空气一分离能量O2燃烧CO1CH(1)X转化为NH3的基本反应类型属于化合反应(2)该流程中,利用甲烷燃烧提供合成尿素的反应物,其燃烧的化学方程式为 CH_4+2O_2=CO_2+...
doi:10.1016/j.ijms.2013.05.001Jobst, Karl J.Terlouw, Johan K.De Winter, JulienGerbaux, PascalInternational Journal of Mass Spectrometry
已知H2O2是一种弱酸,在强碱性溶液中主要以HO2— 形式存在。目前研究比较热门的Al-H2O2电池,其电池总反应为2Al+3HO2-=2AlO2-+OH-+H2O。现以Al—H2O2电池电解尿素[CO(NH2)2]的碱性溶液制备氢气(右池中隔膜仅阻止气体通过,b、c、d均为惰性电极)。试回答下列问题 电极b是 极,电极反应式为 , (2)右池是...
Enter the formula of a chemical compound to find the oxidation number of each element. A net ionic charge can be specified at the end of the compound between { and }. For example: ZnCl4{2-} or NH2NH3{+}. Enter just an element symbol to show the common and uncommon oxidation states ...
16.(14分)米拉贝隆(G)是一种肾上腺素受体激动剂,其一种合成路线如图所示:HO NH2HO HQ NHCO(CH3)398(H3C)COCOCOC(CH3))[o]0HO一H酰胺NHCO(CH3)3 NaBH DNH2NHCOC(CH3)3j C二氯甲烷HO HNH NH AB HO Gǐ40四氢呋喃E HN FNH2(1)A中含有的官能团名称为 。(2)设计A→B步骤的原因是▲ 。(3)化...