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
7 m选(1分)Analysis of its spectrum can tell not only___ atoms or molecules a substance is composed, but ___ relative amounts they are present.A. what...whatB. that...thatC. of what...in whatD. by that...at that 相关知识点: 试题来源: 解析 C. of what...in what 该题...
[translate] 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] ...
If the number of molecules in 1 mole of a substance is 6.02 × 10, then the number of molecules in 100 moles is A: 6.02 × 10 B: 6.02 × 10 C: 6.02 × 10 D: 6.02 × 10 相关知识点: 试题来源: 解析 D None 反馈 收藏
Even so, some nutritionists are still concerned that people might eat unlimited amounts of food made with the fat substitute without worrying about how many calories they are consuming.Olestra is a substance that makes foods ’fat-free while keeping them delicious. A. Right B. Wrong C. Not ...
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...
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
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]
-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...
Doskey CM, van `t Erve TJ, Wagner BA, Buettner GR (2015) Moles of a substance per cell is a highly informative dosing metric in cell culture. PLOS ONE 10:e0132572.C.M. Doskey, T.J. van 't Erve, B.A. Wagner, G.R. Buettner, Moles of a substance per Cell is a highly ...