On the flip side, a 0.0005 M HCl solution is dilute, yet still strong. Conjugate acid is an acid that formed when the parent base compound gains one proton and the conjugate base is a base that formed when the parent acid compound loses one proton. Is NO2 a weak conjugate base? Expert...
Perigonadal and retroperitoneal fats were weighed, combined and cut into a pulp in DPBS/0.5% BSA and digested with 1 mg/ml collagenase type II from Clostridium histolyticum (Sigma Aldrich C6885) in DPBS with 0.5% BSA and 10 mM CaCl2 (Sigma) for 10 min at 37 °C on a shaker. EDTA was...
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It is used for acetylation of alcohols using Acetylating Reagents and Base Catalysts. Purification Methods DABCO crystallises from 95% EtOH, pet ether or MeOH/diethyl ether (1:1). Dry it under vacuum over CaCl2 and BaO. It can be sublimed in vacuo, and readily at room temperature. It ...
What is the molarity of a solution in which .45 grams of sodium nitrate are dissolved in 265 mL of solution? An aqueous solution contains 4.50 g of calcium chloride, CaCl2, per liter. What is the molarity of CaCl2? When calcium chloride dissolves in water, the calcium ions, Ca2+, and ...
In the classical model of haematopoiesis, a homogeneous pool of haematopoietic stem cells (HSCs) proliferates while generating multipotent progenitors that, by following a stepwise restriction of lineage potential, generate all mature blood and immune cells1. This model has been challenged by evidence ...
男，20岁。发热，咳黄色脓痰4天。查体:体温39.2°C，右肺闻及湿啰音，胸部X片显示大片致密影，WBC19X109/L，给予抗生素治疗，2天后症状加重，出现胸痛、呼吸困难，右肺呼吸音降低，胸片示右侧胸腔积液。最可能的诊断是（）
(20 mM TRIS pH 7.6, 10 mM MgAcet, 150 mM KAcet, 0.4% TRITON X-100, 6 mM β-mercaptoethanol, 5 mM CaCl2, 1 mM chloramphenicol, with 2 mM GMP-PNP and 100 U/mL of DNAse I). The extracted total RNA was used for purification of mRNA and ribosomal footprint ...
The frontal part of the hemisphere was pinned on a 3% agar base, and horizontal brain slices (400 μm thick) containing striatum and cortex were sectioned with a rotary slicer in artificial cerebrospinal fluid (ACSF) containing (in mM) the following: NaCl, 124; KCl, 5; CaCl2, 2; MgCl2...
下列叙述正确的是( ) A.金属单质都能导电,非金属单质都不能导电 B.离子化合物一定不含有共价键 C.只含有共价键的物质一定是非电解质 D.CaCl2在熔融状态下可导电,它是强电解质 查看完整题目与答案 高中化学>电解质、非电解质考试题目 等物质的量的Mg、Al、Zn、Fe分别与过量的稀硫酸反应,反应后产生氢气最...