mL); the organic layer was separated, and the aqueous layer was extracted with EtOAc (2 × 8mL). The combined organic layers were washed consecutively with 1 N H2SO4 (5 mL) andH2O (2×10 mL) and dried (Na2SO4), and the solvent was evaporated under reduced pressure.The residue was...
结果1 题目 2 A liquid is thought to be pure ethanol.What is the best way to test its purity? B A burn it completely in oxygen B measure its boiling point C react with ethanoic acid D test with litmus paper 相关知识点: 试题来源: 解析 B 反馈 收藏 ...
PROBLEM TO BE SOLVED: To improve a yield of unsatd. nitrile being a catalyst by using a niobium-containing liquid starting material obtained by separating ... W Mamoru,H Hidenori 被引量: 0发表: 2000年 ABRADANT PURPOSE:To aim at the secureness of profile irregularity and surface roughness an...
as we all have found out, water may be a solid, or a liquid or a gas.when it isa solid, it may be as hard as brick, when itis a liquid, you can pour it out of a container. when it is a gas, you cannot see or feel it. although about 70 percent of the earths surface is ...
Appearance:Liquid; Usage:Textile Auxiliary Agents, Paper Chemicals; Color:Yellow; Product Name:Wet Strength Agent; Chemical Name:Pae Resin; Trade Name:Wsr; Content:12.5-25%; pH:3.0-7.0; 3-Mcpd Content:10 to 8, 000; 1,3-DCP Content:10 to 10, 000; ...
The stained cells were observed under a fluorescence microscope (Olympus AX80T; Olympus Optical; Tokyo, Japan). Growth assay Unless otherwise noted, all cultures were grown in 100 mL butyl stopper- and screw-cap-sealed glass vials containing 50 mL liquid medium (pH6.0) at 30 °C. ...
The one suitable for corrosive nanofluid and liquids such as LANF or even pure LiBr solution is called the transient short wire. However, it is also used for other types of nanofluid [43]. The other approach is called the liquid metal transient hot wire. In the latter, mercury in a ...
The liquid saturation density of pure fluids is commonly predicted using models based on the corresponding states principle. Nevertheless, it is well-known... A Mulero,MI Parra - 《Physics & Chemistry of Liquids》 被引量: 15发表: 2008年 Dielectric Constant of Water Vapor nor the small residual...
Creatine alternatives can be found in various forms ranging from capsules, pills, liquid, powder, and much more. Generally, these capsules get coated in gelatin, which is essentially an animal-based ingredient. Therefore, for a vegan diet, always choose the powdered form. ...
defined along and parallel to flow lines allow us to avoid the complexities that arise from viscous anisotropy in ice, which would require a non-scalar form of A to represent deformation in multiple directions, and spatial variations in characteristics like ice temperature and liquid water content....