A. Measuring length B. Measuring volume C. Measuring weight D. Measuring temperature 相关知识点: 试题来源: 解析 B。解析:beaker 是烧杯,主要用于测量液体体积。选项 A 测量长度要用尺子;选项 C 测量重量要用秤;选项 D 测量温度要用温度计。反馈...
In a chemistry experiment, we need a beaker. What is a beaker used for? A. Measuring temperature B. Holding liquids C. Cutting objects D. Weighing substances 相关知识点: 试题来源: 解析 B。解析:Beaker 的意思是烧杯,主要用于盛放液体。选项 A 测量温度是温度计的作用;选项 C 切割物品是刀具的...
[translate] ait is not until the tree is 20to 25years old that it become a real adult 它不是,直到树是它适合一个真正的大人的20to 25years老[translate] aWhat is the purpose of writing this article 什么是写这篇文章的目的[translate]
65K Learn how to use a volumetric flask in laboratory experiments. Understand the difference in function between volumetric flasks, Erlenmeyer flasks, and beakers. Related to this QuestionWhat is the purpose of having a calibration curve using five standard solutions of the...
What is the purpose of benzene nitration? Why should you never use a beaker for recrystallization? What are polyesters? What is the purpose of the insulated walls in a calorimeter? 1. What is the purpose of a calibration curve? What are luminescent down-shifters? And what is/are its impor...
A. Crucible is used for heating while beaker is for measuring. B. Crucible is made of glass while beaker is of metal. C. Crucible is for holding solids and beaker for liquids. D. Crucible is small and beaker is large. 相关知识点: 试题...
解析 C。“Beaker”是烧杯;“Test tube”是试管;“Graduated cylinder”是量筒,用于测量液体体积;“Flask”是烧瓶。正确答案是 C,因为只有量筒是专门用来测量液体体积的。涉及的词汇有 beaker、test tube、graduated cylinder、flask,语法上本题是简单的特殊疑问句,考查对实验仪器名称的理解。
A beaker is a cylindrical piece of glassware with a flat bottom and thick lip. Designed for scientific research, a beaker must...
Question: What is the purpose of a water blank when performing a GC analysis? Gas chromatography Chromatography is a technique used to separate components of a mixture analyte and can quantify them. Gas chromatography focuses on analytes in solutions that are converted to gases upon analysi...
What is the purpose of an emulsifier?Emulsifier:An emulsifier is a chemical additive that aids in mixing two liquids; there are several emulsifiers such as egg yolk, mustard, and lecithin. The use of emulsifiers can have side effects such as damage to the intestinal barrier....