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
aThe amount of a substance containing a number of particles (atoms , molecules , ions ,electrons, etc ) equal to the number of atoms in 0.012kg of the carbon isotope is called a mole (the mole is a basic unit of the SI system ). 正在翻译,请等待...[translate]...
题目Analysis of its spectrum can tell not only ___ atoms or molecules a substance is composed, but ___ relative amounts they are present.? what…whatthat…thatof what…in whatby that…at that 相关知识点: 试题来源: 解析 of what…in what 反馈 收藏 ...
百度试题 结果1 题目 5 The mass of 4 molecules of a substance is2.125*10^(-22)g What is the possible formul a of the substance? A CH4 B O2 C SO_2 D I2Your answer B 相关知识点: 试题来源: 解析 B 反馈 收藏
and lose it all and love and affectio and loving it and made me understan and make no provision and makin love was ju and making painful de and manufacture food and many other brands and mark in every fac and matrix molecules and maturity and may deny and may give and maybe about your...
What is a molecule? A molecule is two or moreatomsconnected by chemical bonds, which form the smallest unit of a substance that retains the composition and properties of that substance. Molecules form the basis of chemistry. Molecules are noted with theelementsymbol and a subscript with the num...
those innocent sunny those kissable lips those memories those messed up value those molecules those once beautiful those past those teenage hopes those that make the b those who ate enought those who climb high those who dont unders those who enjoy free those who hate dbsk those who love deeply...
(2)Which is a molecular compound?(a) KI (b) Fe(NO3)2 (c) H2S (d) Na2S (e) O2 (3)Which is the symbol for the SI base unit of mass (a)m; (b) g; (c) kg; (d) gr; (e) mol (4)Which term can correctly be applied to the reaction Zn(s) + 2HCl(aq) → ZnCl2...
-pieces of a yellowish substance: the world's oldest cheese scattering around the necks of some bodies in Xiaohe, a Bronze Age cemetery. A recent study, published in Cell,analyzes the DN A of this ancient dairy, shedding light on how it was made and how its production spread.In a previo...
aas water molecules within it will be structured around the substance (protein, for example) to be ‘dried’ and immobilized to a solid surface. 因为水分子在它里面在物质(蛋白质附近将被构造,例如)是`干’和被固定对坚实表面。 [translate] ...