Answer to: The mass number of an atom depends primarily on the number of a. protons and neutrons. b. positrons. c. neutrons and electrons. d...
How could Avogadro and his colleagues determine the number of atoms in a given substance, or any quantitative property of a single atom, when the technology to observe individual atoms was not invented until the twentieth century? Pioneering scientists of the atom, such as Avog...
When comparing atoms to larger objects — with a large disparity in size — orders of magnitude show how to quantify the size differences. Orders of magnitude allow you to compare the approximate value of an extremely small object, such as the mass or diameter of an atom, to a much larger...
31. In every atom in its normal state, the number of protons equals the number of electrons, something which is directly related to the electrical properties of the proton and the electron. 相关知识点: 试题来源: 解析 【答案】在每个原子的正常状态下,质子的数量等于电子的数量,这与质子和 电...
The thermogravimetric (TG) analysis was used to estimate the particle formation efficiency of the Ag nanoparticles (Supplementary Fig.4). After heating colloidal solutions (the mass was marked in Supplementary Fig.4) at 600 °C under nitrogen protection, only Ag nanoparticles and the decomposed ...
Recently, a novel cyclo-heptapeptide composed of alternating d,l-amino acids and a unique thiazolidine heterocycle, called lugdunin, was discovered, which is produced by the nasal and skin commensal Staphylococcus lugdunensis. Lugdunin displays potent an
The climate is not likely to offer an insuperable problem, for the explorer Admiral Byrd has shown that the climate is possible even for men completely untrained for expeditions into those frozen wastes. Some of his parties were men who had never seen snow before, and yet he records that the...
The DSQL could also perform tests of quantum optical teleportation and entanglement swapping between inertial frames. The inertial frames are defined by the relative velocity of the nodes in the communication network, and their positions with respect to the central mass. Descriptions of quantum states...
What is the mass number of an electron? Electrons: Electrons are small, negatively-charged subatomic particles. They orbit the nucleus of an atom. The number of electrons often equals the number of protons in the nucleus because their negative charge helps to balance the positive charge of the...
The number of protons in an atom equals the number of electrons. This is necessary to balance the charge of an atom, and to increase its stability...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your tou...