(b)Which have more molecules? 10g of sulphur dioxide(SO2)or 10g of oxygen(O2)? View Solution The molecules of different substances have the same mass . View Solution The mass of one molecule of a substance is4.65×10−23g. What is its molecular mass ? What colud this substance be ?
A substance required by an organism to survive and grow is a nutrient. Carbohydrates, proteins, fats, and nucleic acids are the four major nutrients needed by the human body.Answer and Explanation: Biomolecules are the chemical molecules present in a living organism. These molec...
aThe masses of atoms and molecules are characterized by using quantities known as the relative atomic mass of an element (the atomic mass in short) and the relative molecular mass of a substance (the molecular mass ) 原子和分子大量描绘的是为使用数量以元素(原子质量的原子量简而言之)和物质的分子...
a solid substance. Bromine and mercury are two elements which are liquids at room temperature. Bromine, like its neighbours chlorine and iodine in the periodic ( = of period ) table, has molecules made up of two atoms each. In these liquid elements, the molecules are close together, but ...
Nowadays, we discover that a substance is composed of molecules or ions, both of which are produced from ().A.protonsB.atomsC.particlesD.elements的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习的工具.一键
Solubility is not an intrinsic property of substances (like oxidation state), rather it is associated with a solvent. Solutes dissolve in solvents in which they can form bonds with the solvent molecules. For example {eq}NaCl {/eq}, an ionic substance is soluble in water because the {eq}Na...
Molecules are relatively stable substance can exist independently and maintain minimum unit of physico-chemical characteristics of the substance. 翻译结果4复制译文编辑译文朗读译文返回顶部 Elements are substances that can exist independently in the relative stability and to preserve the material physico-chemic...
1、常见物质的物理性质归纳(Physical properties of common substances are summarized)Physical properties of common substances are summarized1., the law of color(1) common material colorA substance with red as its base colorRed: water insoluble Cu, Cu2O, Fe2O3, HgO, etc.Lye in phenolphthalein, ...
AI is increasingly used to predict how small molecules will interact with biological targets, greatly accelerating the time-consuming and resource-intensive drug discovery and development process. The Quadrant 2™ platform can simulate thousands of interactions in a fraction of the time, minimizing the...
Molecules are held together by one of two types of bonds – covalent bonds or ionic bonds. A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. And the bond they form, which is the result of a stable balance of attractive and repulsive forces betwee...