百度试题 结果1 题目What is the unit used to measure the amount of substance in a sample? A. Gram B. Kilogram C. Liter D. Meter 相关知识点: 试题来源: 解析 答案:A 反馈 收藏
The molar mass of a substance is the mass of one mole of that substance. What is the unit of molar mass? A. g/mol B. mol/g C. L/mol D. mol/L 相关知识点: 试题来源: 解析 A。本题考查摩尔质量的单位。摩尔质量是指单位物质的量的物质所具有的质量,单位是克每摩尔(g/mol)。选项 B...
7. the dose makes the poison The toxicity of a substance is more closely related to the amount consumed than its chemical composition. (一种物质的毒性与摄入的量密切相关,而不是其化学成分) 8.poisoned chalice Something that initially appears to be good, wholesome, or positive, but is really ha...
aWhat is the amount of “Retain profits”? since there should be a retained profit. 什么是相当数量“保留赢利” ? 因为应该有保留的赢利。[translate]
Amount A quantity of something, especially the total of a thing or things in number, size, value, or extent The substance is harmless if taken in small amounts Sport gives an enormous amount of pleasure to many people Price The cost at which something is obtained Believes that the price of...
Everysubstance,nomatterwhatitis,is composed ofverysmallparticlescalledmolecules.各种物质,不论它是什么,都是由一些称为分子的很小的粒子构成的。 相关知识点: 试题来源: 解析 考查动词短语。句意:每一种物质,无论是什么,都是由非常小的粒子组成的。根据句意和所给词可知,这里应选composed,be composed of 表示...
5 (a) State what is meant by the specific heat capacity of a substance.[2](b) A student carries out an experiment to find the specific heat capacity of aluminium. He uses an electric heater and a thermometer, inserted into separate holes in an aluminium block.The following dat a are ob...
a尊敬的来宾 Respect guest[translate] abelieve in yourself and your ability to deal with difficult problems. 相信你自己和您的能力应付困难的问题。[translate] a真失败 正在翻译,请等待...[translate] asubstance is what 物质是什么[translate]
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Q.There are four substances W, X, Y and Z. The substance W is a dark violet solid having diatomic molecules. A solution of W in alcohol is used as a common antiseptic C. The substance X is a white solid which is usually recovered from sea water on a large scale. The sub...