分子式:C5H5N5 分子量: 产品性状:Powder 纯度:98% 分子结构式: 规格:5mg/20mg(可根据客户需求提供) 快递:全国包邮 用途:本产品仅供科研实验,不得用于临床诊断 更多详细信息可来电咨询。公司专业供应标准品对照品、ELISA试剂盒、PCR试剂、细胞、菌种、生化试剂、培养基等科研产品。凭借其客户至上的服务意识,致力于...
What is the OH- of a 1.40 M solution of pyridine (C5H5N, Kb = 1.70 x 10-9)? Which of the following 1 M solutions will have the lowest freezing point: C2H5OH, Kl, Mgcl2? What volume of a 0.259 M hydroiodic acid solution is required to neutralize 17.3 mL of a 0.126 M barium ...
Maleic acid forms colorless prismatic crystals having a melting point of 130.5 °C. It exhibits a high solubility in water, amounting to 78.8 g per 100 ml of water at 25 °C and 392.6 g per 100 ml of water at 97.5 °C. Dissolved in water, maleic acid is a very strong organic acid...
Which of the following are salts of a strong base and a strong acid? (a) Ba_3(PO_4)_2 (b) LiNO_3 (c) NaI (d) CaCO_3 (e) KClO_4Which one of the following is the weakest acid? HF(Ka=6.8X10-4) a)HCIO(Ka=3.0X10-8) b)HN02(Ka=4.5X10-4) c)HCN(Ka=4.9X10-10) d)Ac...
a) Cl− b) I− c) F− d) Br− Question: Which is strongest base among the following? a) Cl− b) I− c) F− d) Br− Acid and Base: Acid and base are two behavior of a chemical. Except for acid and base, a chemical can be found in the neu...