The density of zinc is 7.13 g cm−3 its atomic weight is 65.4 g mol−1. Determine...

The density of zinc is 7.13 g cm−3 its atomic weight is 65.4 g mol−1. Determine its Fermi energy.

Expert Solution

genius_generous answered 2 years ago

Potassium has a density of 0.86 g/cm^3, an atomic weight of 39.0983 g/mol, and contains 0.012%...

Potassium has a density of 0.86 g/cm^3, an atomic weight of 39.0983 g/mol, and contains 0.012% of Potassium-40 which is radioactive by beta-decay with a half-life of 1.25x10^9 years. a. What is the total and average binding energy of potassium-40? b. If the average mass of potassium within the human body is about 140 g, estimate the average activity (in bq) of [40,19] K in the body.

The density of sodium is 0.971 g/cm3 and it has an atomic weight of 22.9897 g/mol....

The density of sodium is 0.971 g/cm3 and it has an atomic weight of 22.9897 g/mol. Each sodium atom contributes one valence electron to the metal, so the number of electrons per unit volume, N/V, is equal to the number of sodium atoms per unit volume. a) Calculate the number density of atoms per unit volume, N/V. b) Calculate the Fermi energy of sodium. c) Calculate the Fermi temperature. d) At room temperature (298 K), calculate the chemical potential. ...

Palladium crystallizes in a face-centered cubic unit cell. Its density is 12.02 g/cm^3 .Calculate the atomic...

Palladium crystallizes in a face-centered cubic unit cell. Its density is 12.02 g/cm^3 .Calculate the atomic radius of Pd. A) calculate the average mass of 1pd atom B) calculate the number of pd atoms in FCC C) use the density to calculate the volume D) Determine the edge lenth using volume E) determine the atomic radius using the pythagorean theorem .

The density of aluminum metal is 2.70 g/mL, the atomic mass 26.98 g/mol, the radius of...

The density of aluminum metal is 2.70 g/mL, the atomic mass 26.98 g/mol, the radius of an aluminum atom is 143 picometer and the packing density is 74% theory. Compute Avogardo's number from these data and briefly outline your reasoning/strategy.

1. Listed below are the atomic weight, density, and atomic radius for three hypothetical alloys. For...

1. Listed below are the atomic weight, density, and atomic radius for three hypothetical alloys. For each determine its crystal structure and then justify your determination. Alloy // Atomic weight (g/mol) // Density (g/ cm^3) // Atomic Radius (nm) A // 43.1 // 6.4 // 0.122 B // 184.4 // 12.3 // 0.146 C // 91.6 // 9.6 // 0.137

Consider a hypothetical metal that has a density of 12.7 g/cm3, an atomic weight of 135.9...

Consider a hypothetical metal that has a density of 12.7 g/cm3, an atomic weight of 135.9 g/mol, and an atomic radius of 0.129 nm. Compute the atomic packing factor if the unit cell has tetragonal symmetry, with a and c parameters 0.452 and 0.348 nm, respectively.

Consider a hypothetical metal that has a density of 8.40 g/cm3, an atomic weight of 108.6...

Consider a hypothetical metal that has a density of 8.40 g/cm3, an atomic weight of 108.6 g/mol, and an atomic radius of 0.136 nm. Compute the atomic packing factor if the unit cell has tetragonal symmetry; values for the A and C lattice parameters are 0.494 and 0.352, respectively.

Determine the unbalanced force acting on an iron ball (r=1.5cm, density of iron = 7.8 g/cm^3)...

Determine the unbalanced force acting on an iron ball (r=1.5cm, density of iron = 7.8 g/cm^3) when just released while totally immersed in (a) water and (b) mercury (density of mercury = 13.6 g/cm^3). What will be the initial acceleration of the ball in each case?

A. Calculate molarity of glacial acetic acid( mol. weight=60g/mol, specific density 1.049 g/mL) B.Calculate the amount...

A. Calculate molarity of glacial acetic acid( mol. weight=60g/mol, specific density 1.049 g/mL) B.Calculate the amount (in grams) of sodium acetate (Mol. weight= 82g/mole) and the amount (in mL) of glacial acetic acid required to make 1 L of 0.1 M sodium acetate buffer at pH 4.5. The pKa of acetic acid is 4.8.

consider two cubes: a copper cube (Density = 8.96 g/cm^3) and a lead cube (Density =...

consider two cubes: a copper cube (Density = 8.96 g/cm^3) and a lead cube (Density = 11.4 g/cm^3) that both have an edge length of 3.0 cm. 1) which cube (if either) has the greater mass? How do you know? 2) which cube (if either) displaces the more water when fully submerged? how do you know? 3) which cube (if either) experiences the buoyant force of greatest magnidude when fully submerged? How do you know? 4) calculate the magnitude of...

Question