Homework Answers
It is given that 1.264 g of Fe is added to 50 mL of water. It is observed that no volume is displaced when Fe is added. Therefore, the volume of iron sample would be same as the volume of water.
Hence, the volume of iron sample is 50 mL.
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Unit Cell Calculations Name _____________________________ Unit Cells: The Simplest Repeating Unit in a Crystal The structure...
![](https://lh4.googleusercontent.com/K_IdXKabFLhtXXOIgQQGWz-LYlYNPa5z9cPt6FQy3eCY_hrY26qZS8XFBDdXJxqT5rgw1lAAnw6EBuTmrr7-OGOL5RkSwGNWJ97ys65Nc5ZjNeeCGSQ-UGT6SRqFEqehUHwDJLPp" aria-describedby="jt3"><img alt="unitcell1.png)
Unit Cell Calculations Name
_____________________________
Unit Cells: The Simplest Repeating Unit in a Crystal
The structure of solids can be described as if they were
three-dimensional analogs of a piece of wallpaper. Wallpaper has a
regular repeating design that extends from one edge to the other.
Crystals have a similar repeating design, but in this case the
design extends in three dimensions from one edge of the solid to
the other. We can unambiguously describe a piece of wallpaper by...
CHIM 2045-Other Toolbox #3: Student Name: Solids- Cubic Unit Cell Type Problems Sect. Date: the t...
CHIM 2045-Other Toolbox #3: Student Name: Solids- Cubic Unit Cell Type Problems Sect. Date: the three tvpes of cubic unit cells, giving in addition for each case: a. The net number of atoms contained within a unit cell: b. The total number of different atoms that contribute to the volume of this type of unit cell 6 Cubic Type: Net # Atom/Unit Cell # of Diff. Atorns/Unit Cell U.C.L Packing EfficiencyPacking Efficiency Cubic Type: Net #Atom/Unit Cell-A-_ # of Diff....
CHIM 2045-Other Toolbox #3: Student Name: Solids- Cubic Unit Cell Type Problems Sect. Date: the three...
CHIM 2045-Other Toolbox #3: Student Name: Solids- Cubic Unit Cell Type Problems Sect. Date: the three tvpes of cubic unit cells, giving in addition for each case: a. The net number of atoms contained within a unit cell: b. The total number of different atoms that contribute to the volume of this type of unit cell 6 Cubic Type: Net # Atom/Unit Cell # of Diff. Atorns/Unit Cell U.C.L Packing EfficiencyPacking Efficiency Cubic Type: Net #Atom/Unit Cell-A-_ # of Diff....
2. Using the data listed for aluminum in Table 1, a. Calculate the volume of one...
2. Using the data listed for aluminum in Table 1, a. Calculate the volume of one aluminum atom, va b. Calculate the volume of one mole of aluminum atoms, Vm in the liquid element. Table 1. Physical Properties of Some Common Elements Element Radius (cm) Density (of liquid) (g/mL) 6.98 7.81 Iron, Fe Nickle, Ni Copper, Cu Aluminum, Al Silver, Ag Lead, Pb Atomic Mass (g/mol) 55.845 58.693 63.546 26.98 107.87 207.2 1.56 x 10-8 1.63 x 108 1.40 x...
Question 8 (1 point) Vanadium (50.9 g/mol) is a metal that under normal conditions crystallizes in...
Question 8 (1 point) Vanadium (50.9 g/mol) is a metal that under normal conditions crystallizes in a body- centered cubic lattice and has a density -6 g/cm3. If instead vanadium were to crystallize in a simple cubic lattice, calculate the new density. The atomic radius of vanadium is 205 pm. HINT: First, calculate the edge length of a simple cubic cell from the atomic radius (1 suggest converting to cm at this step). Second, calculate the volume of the unit...
all of them please!!!!! 12. What is the volume, in liters, of 12.0 moles of bromine?...
all of them please!!!!!
12. What is the volume, in liters, of 12.0 moles of bromine? Bromine is a liquid at room temperature and has a density of 3.12 g/cm 13. Calculate the density of sulfur if you have 9.92x102 atoms in 2.51x10 L? UNITS 14. Calculate the number of hydrogen atoms in 0.252 ML of sulfuric acid. (D=1.02g/mL) 15. Indicate whether the following is true or false. If it is false, correct it to make it true. a. If...
Post-lab question Part A 1. Metallic sodium forms a body centered cubic crystal. Why would the...
Post-lab question Part A 1. Metallic sodium forms a body centered cubic crystal. Why would the water displacement method used in part A not be suitable to determine the density of sodium? (Hint: watch the following video to help you answer this question: https://www.youtube.com/watch?v=18tOtZKpi04) 2. Calculate the density of sodium. (The radius of a sodium atom is 186pm) Post-lab Question Part B: Consider cubic array iodide ions (r =220pm) in which the anions are touching along the face of the...
question one question two Aspirin lab (10 points) 5. a) Spectroscopy is being used to determine...
question one
question two
Aspirin lab (10 points) 5. a) Spectroscopy is being used to determine the concentration of aspirin in an unknown sample. The absorbance spectrum of the highest concentration standard [Fe3+, SA) prepared is given below. What wavelength should be used to create the calibration curve for the experiment? Explain your reasoning. 0.14 Absorbance 0.02 250 300 450 500 350 400 Wavelength (nm) Wavelength Explain your reason briefly. b) In this experiment an aspirin tablet was placed in...
--Given Values-- Atomic Radius (nm) = 0.116 FCC Metal = Gold BCC Metal: = Sodium Temperature...
--Given Values-- Atomic Radius (nm) = 0.116 FCC Metal = Gold BCC Metal: = Sodium Temperature ( C ) = 1017 Metal A = Tin Equilibrium Number of Vacancies (m-3) = 6.02E+23 Temperature for Metal A = 369 Metal B = Gallium 1) If the atomic radius of a metal is the value shown above and it has the face-centered cubic crystal structure, calculate the volume of its unit cell in nm3? Write your answers in Engineering Notation. ...
Titration data 2. For each of the following, one sample calculation should be shown along with...
Titration data
2. For each of the following, one sample calculation should be shown along with the calculated values for the other trials. [5 points] a) Calculate the volume of milk of magnesia sample used in each trial. Note that the density of the milk of magnesia suspension is 1.005 g/mL. (Density experimentally determined by summer student K. Murdymootoo using a pycnometer, 2013) b) Calculate the mass of Mg(OH)2 (in mg) for each trial from your titration data. c) Using...
CHIM 2045-Other Toolbox #3: Student Name: Solids- Cubic Unit Cell Type Problems Sect. Date: the three tvpes of cubic unit cells, giving in addition for each case: a. The net number of atoms contained within a unit cell: b. The total number of different atoms that contribute to the volume of this type of unit cell 6 Cubic Type: Net # Atom/Unit Cell # of Diff. Atorns/Unit Cell U.C.L Packing EfficiencyPacking Efficiency Cubic Type: Net #Atom/Unit Cell-A-_ # of Diff....
CHIM 2045-Other Toolbox #3: Student Name: Solids- Cubic Unit Cell Type Problems Sect. Date: the three tvpes of cubic unit cells, giving in addition for each case: a. The net number of atoms contained within a unit cell: b. The total number of different atoms that contribute to the volume of this type of unit cell 6 Cubic Type: Net # Atom/Unit Cell # of Diff. Atorns/Unit Cell U.C.L Packing EfficiencyPacking Efficiency Cubic Type: Net #Atom/Unit Cell-A-_ # of Diff....
2. Using the data listed for aluminum in Table 1, a. Calculate the volume of one aluminum atom, va b. Calculate the volume of one mole of aluminum atoms, Vm in the liquid element. Table 1. Physical Properties of Some Common Elements Element Radius (cm) Density (of liquid) (g/mL) 6.98 7.81 Iron, Fe Nickle, Ni Copper, Cu Aluminum, Al Silver, Ag Lead, Pb Atomic Mass (g/mol) 55.845 58.693 63.546 26.98 107.87 207.2 1.56 x 10-8 1.63 x 108 1.40 x...
Question 8 (1 point) Vanadium (50.9 g/mol) is a metal that under normal conditions crystallizes in a body- centered cubic lattice and has a density -6 g/cm3. If instead vanadium were to crystallize in a simple cubic lattice, calculate the new density. The atomic radius of vanadium is 205 pm. HINT: First, calculate the edge length of a simple cubic cell from the atomic radius (1 suggest converting to cm at this step). Second, calculate the volume of the unit...
all of them please!!!!!
12. What is the volume, in liters, of 12.0 moles of bromine? Bromine is a liquid at room temperature and has a density of 3.12 g/cm 13. Calculate the density of sulfur if you have 9.92x102 atoms in 2.51x10 L? UNITS 14. Calculate the number of hydrogen atoms in 0.252 ML of sulfuric acid. (D=1.02g/mL) 15. Indicate whether the following is true or false. If it is false, correct it to make it true. a. If...
Post-lab question Part A 1. Metallic sodium forms a body centered cubic crystal. Why would the water displacement method used in part A not be suitable to determine the density of sodium? (Hint: watch the following video to help you answer this question: https://www.youtube.com/watch?v=18tOtZKpi04) 2. Calculate the density of sodium. (The radius of a sodium atom is 186pm) Post-lab Question Part B: Consider cubic array iodide ions (r =220pm) in which the anions are touching along the face of the...
question one
question two
Aspirin lab (10 points) 5. a) Spectroscopy is being used to determine the concentration of aspirin in an unknown sample. The absorbance spectrum of the highest concentration standard [Fe3+, SA) prepared is given below. What wavelength should be used to create the calibration curve for the experiment? Explain your reasoning. 0.14 Absorbance 0.02 250 300 450 500 350 400 Wavelength (nm) Wavelength Explain your reason briefly. b) In this experiment an aspirin tablet was placed in...
Titration data
2. For each of the following, one sample calculation should be shown along with the calculated values for the other trials. [5 points] a) Calculate the volume of milk of magnesia sample used in each trial. Note that the density of the milk of magnesia suspension is 1.005 g/mL. (Density experimentally determined by summer student K. Murdymootoo using a pycnometer, 2013) b) Calculate the mass of Mg(OH)2 (in mg) for each trial from your titration data. c) Using...
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