〔例证〕Water and food are essential to life.水和食物对生命是必不可少的。2、basic adj. 基本的，主要的 〔辨析〕指构成事物最重要、最根本部分的。〔例证〕He began to learn the basic principles of chemistry.他开始学习基本化学原理。3、fundamental adj. 基本的，根本的 〔辨析〕指反映事...
lecture:演讲 basic chemistry:基础化学 【翻译】有多少人参加了基础化学讲座? . 【解析】how many people在句中作主语,语序不需要改变,用陈述语序即可,C和D选项为一般疑问语序,所以排除。people:人们,是复数,不能用be动词is,is只能用于单数主语,所以排除B选项,因此正确答案为A。. 反馈...
Hi everyone, I'm having trouble with this question: "Calculate the number of moles required to make 250ml of 100mM KMnO4 Give your answer in moles to two significant figures omitting the units" I didn't do A-Level chemistry only Biology, and I've watched a few videos and read a few ...
Rate this question: 0 1 4. An acid is a proton donor. A. True B. False Correct Answer A. True ExplanationAn acid is a substance that can donate a proton (H+) to another substance. This definition is based on the Bronsted-Lowry theory of acids and bases. According to this ...
Question: What is basic physical chemistry? Chemistry: Chemistry is a branch of science that deals with studying the properties and behaviour of matter. Chemistry, as a science, ventures into the elements, compounds, and mixture and the atoms that make them. Also, look at the structure of the...
Basic question-Skeletal equations « on: July 25, 2009, 06:58:23 PM »Hello, I've never taken a chemistry class in school but now being out of school i'm trying to teach myself.Up till now its been going well..Ive understood chemical bonding( covalent, polar covalent, and ionic...
百度试题 结果1 题目Physics, chemistry, and biology, which is the basic science? A. All three of these sciences are equally basic. B. Chemistry. C. Biology. D. Physics. 相关知识点: 试题来源: 解析 D 反馈 收藏
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I've searched the forum and haven't found this exact question asked which is very basic and fundamental. In incompressible flow, I know that static pressure energy is converted to heat (or vibration/noise) exclusively because kinetic energy (velocity) must be constant in this type of flow due...
Chemistry did not emerge as a science until after the scientific revolution in the seventeenth century and then only rather slowly and laboriously. But chemical knowledge is as old as history, being almost entirely concerned with the practical arts of living. Cooking is essentially a ...