答案 应该是0.25 mol吧如果是这样 那结果就应该是.25*6.02*(10^23)*12=1.88*10^24相关推荐 1【题目】calculate the mass in atomic mass units of 0.25 of carbon-12 atoms?咋么解啊。急 2calculate the mass in atomic mass units of 0.25 of carbon-12 atoms? 咋么解啊。急 反馈 收藏 ...
Calculate the mass, in grams, of Avogadro's number of mercury atoms. Avogadro's Number: In chemistry we often deal with exponentially large quantities of atom, molecule or ion particles. We count these particles as entire collections, rather than single particles. When this collection ...
2.21 Using Table 2.2, determine the number of covalent bonds that are possible for atoms of the following elements: germanium, phosphorus, selenium, and chlorine. 2.24 On the basis of the hydrogen bond, explain the anomalous behavior of water when it freezes. That is, why is there volume ...
Atomic massis the sum of the masses of the protons, neutrons, and electrons in an atom, or the average mass, in a group of atoms. However, electrons have so much less mass than protons and neutrons that they don't factor into the calculation. So, the atomic mass is the sum of the ...
Answer to: Calculate the radii of the species Cl, Cl+, and Cl-. By signing up, you'll get thousands of step-by-step solutions to your homework...
Answer to: A sample of gold (Au) has a mass of 40.14g. \\ A. Calculate the number of moles of gold in the sample. B. Calculate the number of...
Atoms are proved to be semi-classical electronic systems in the sense of closeness of their exact quantum electron energy spectrum with that calculated within semi-classical approximation. Introduced semi-classical model of atom represents the wave functions of bounded in atom electrons in form of hyd...
gmx clustsize computes the size distributions of molecular/atomic clusters in the gas phase. The output is given in the form of an .xpm file.
determine the number of covalent bonds that are possible for atoms of the following elements: germanium, phosphorus, selenium, and chlorine. 2.24 On the basis of the hydrogen bond, explain the anomalous behavior of water when it freezes. That is, why is there volume expansion upon solidification...