To find the molecular formula of a compound it is necessary to know both its empirical formula and its molecular or molarmass, which is usually some multiple of the mass calculated from the empirical formula 化合物的分子式代表每个元素原子的实际数量当前在分子。 要发现化合物的分子式知道它的实验...
you wouldn’t consider it a molecule, as it is in fact a huge lattice network of individual sodium chloride compound particles, without a clear number of atomic nuclei. The same thing is true if you look at a drop of water; you aren’t looking at a molecule of water, but rather a h...
A molecule is a substance made of two ore more bonded atoms. A compound is a substance made of two or more different elements in fixed proportions.
1.the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound. 2.a quantity of a substance, the weight of which is numerically equal to the molecular weight; gram molecule. ...
A compound is a substance form two or more elements chemically united in fixed proportions.A molecule is a group of atom that can take part in a chemical reaction.
The antonym of “atom” is ___. A. molecule B. particle C. compound D. element 相关知识点: 试题来源: 解析 C。“atom”意为“原子”,“compound”意为“化合物”,与“atom”相对。“molecule”分子;“particle”粒子;“element”元素,都不是“atom”的反义词。反馈...
Useful phosphole compounds and object of the present invention, a phosphole ring manufacturing method of a compound having in the molecule phosphole ring manufacturing method thereof, and Porihosuhoru and Porihosuhoru for the preparation... 俣野 善博,今堀 博 被引量: 0发表: 2013年 The Identi...
atom economy for the formation of C5H11Cl Deduce how many straight-chain isomers of C5H11Cl could be formed.7 (f) Consider the following compound.H (CL ClH H - C -C- C -C一H HH〈H H - C -H H - C -H HName this compound.Deduce the empirical formul a of this compound. ...
The___of a novel drug molecule is a long, expensive, and tortuous process with no guarantee of success. Clearly, out of the almost in finite number of possible compounds, only a___number can ever be___for testing within a given time and the skill of medicinal chemist is in deciding w...
compound having in the molecule phosphole ring manufacturing method thereof, and Porihosuhoru and Porihosuhoru for the preparation of a compound having in the molecule phosphole rings such Porihosuhoru It is a compound having in the molecule, and to provide a use as the functional material....