Research has long established that HBCU students experience higher rates of housing and food insecurity. HBCUs make up only 3 percent of America’s colleges and universities, but nearly 20% of all Black graduates and 25% of Black graduates in the STEM fields. Additionally, our HBCU Ambassador ...
相关知识点: 试题来源: 解析 $$ C u + 2 H _ { 2 } S O _ { 4 } ( 浓 ) \xlongequal [ ] { \triangle } C u ^ { 2 + } + S O _ { 4 } ^ { 2 - } + S O _ { 2 } \uparrow + 2 H _ { 2 } O $$ 反馈 收藏 ...
【答案】(1)$$ ( 1 ) 2 C u + O _ { 2 } \xlongequal [ ] { \Delta } 2 C u O 、 C u O + H _ { 2 } S O _ { 4 } = C u S O _ { 4 } + H _ { 2 } O 、 C u S O _ { 4 } + 2 N a O H = C u ( O H ) _ { 2 } \downarrow + N a _ ...
everyone around me gets nervous 1. 句子缺少介词短语,根据中文提示,应填入adapting to new surroundings and making new friends。 2. 句子缺少动词短语作状语,根据中文提示,应填入step into the wonderful world of higher education。 3. 句子缺少动词短语作宾语,根据中文提示,应填入get involved in every club。
Ôn Châu, Quốc tế Ôn Châu Long Loan (WNZ) Trung Quốc đại lục Phàn Chi Hoa, Phàn Chi Hoa Baoangong (PZI) Trung Quốc đại lục Phụ Dương, Phụ Dương (FUG) Trung Quốc đại lục Phúc Ch...
氯化亚铜,化学式CuCl或Cu_2Cl_2。为白色立方结晶或白色粉末,微溶于水,溶于浓盐酸生成氯化亚铜酸(HCuCl_2强酸),溶于氨水生成氯化二氨合亚铜,不溶于乙醇。实验室制备氯化亚铜:方法1:CuCl_2溶于浓盐酸,加入铜屑并加热,生成HCuCl_2溶液,加水稀释可得CuCl沉淀;方法2:向含有铜丝、氯化铵、盐酸的溶液中加入...
【答案】(1)方法一(利用铁和稀硫酸反应生成的氢气还原氧化铜制取铜):$\mathrm{Fe}+{\mathrm{H}}_{2}\mathrm{S}{\mathrm{O}}_{4}=\mathrm{FeS}{\mathrm{O}}_{4}+{\mathrm{H}}_{2}\uparrow $、${\mathrm{H}}_{2}+\mathrm{CuO}\xlongequal[]{\mathrm{高温}}\mathrm{Cu}+{\mathrm{H}...
Differential regulation of the NO3– and NH4+ transporter genes AtNrt2.1 and AtAmt1.1 in Arabidopsis: relation with long-distance and local controls by N status of the plant. Plant J 26, 143–155. Hattab S, Chouba L, Ben KM, Mahouachi T, Boussetta H (2009). Cadmium- and copper-...
pytorch遇到的一些非常害人的坑一、tensor.scatter()暗含的坑一、tensor.scatter()暗含的坑tensor.scatter()方法pytorch官方文档讲解的还是很详细的,如下图所示: 有一个坑就是:**index参数必须是torch.int64 ortorch.long!torch.int32 ortorch.int都是不可以的!**否则的话,会报一些 ...
该工作加深了对多金属硫化物储钠机制的理解,为设计低成本CZTS用作商业化钠电负极材料提供了思路。相关研究成果以“A Passionfruit-Like Carbon-Confined Cu2ZnSnS4Anode for Ultralong-life Sodium Storage”为题发表在国际顶级期刊Advanced Energy Ma...