A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is 12.61nm. What is the total width of a crystal in millimeters 10 molecules across? Write your answer as a decimal. ? mm X
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- A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is 16.32nm. What is the total width of a crystal in millimeters 105 molecules across? Write your answer as a decimal.A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is 12.85 nm . What is the total width of a crystal in millimeters 105 molecules across? Write your answer as a decimal.3. Chromium forms a body centered cubic crystal. If the length of an edge is 2.884 angstroms, calculate the density (g/cm) and the radius of a chromium atom in angstroms.
- Some hypothetical metal has simple cubic crystal structure. If its atomic weight is 68.21 g/mol and the atomic radius in atomic radius is 0.101 nm, calculate its theoretical density in g/cm3. = 6.022 x 1023 atoms/mo. Express NA your answer in two decimal places only. Do not put the units.7. At 25" C, water rises through 7.36 cm in a capillary of radius 0.20 mm. Calculate its surface temsion at this temperature. (density of water is 0.9971 and gravity is 9.81 m/s')A white substance melts at 70 degrees Celsius. As a solid or in aqueous form it does not conduct electricity and can be easily crushed . What type of solid is this substance likely to be ? Justify your answer .
- A mole of a newly discovered crystalline substance weighs 14.56 grams and displaces 2.3 mL of water. What is the density of the crystal? Find the atomic radius and density of each atom if it is a simple cubic cell? BCC? FCC? HCP? *Use 4 decimal placesPbO2(s)+HCl(aq)→Cl2(g)+PbCl2(aq)+H2O(l)PbO2(s)+HCl(aq)→Cl2(g)+PbCl2(aq)+H2O(l) Express your answer as a chemical equation. Identify all of the phases in your answer. Balance each chemical equation.Some hypothetical metal has simple cubic crystal structure. If its atomic weight is 62.78 g/mol and the atomic radius in atomic radius is 0.111 nm, calculate its theoretical density in g/cm3. NA = 6.022 x 1023 atoms/mo. Express your answer in two decimal places only. Do not put the units.
- Some hypothetical metal has simple cubic crystal structure. If its atomic weight is 71.09 g/mol and the atomic radius in atomic radius is 0.179 nm, calculate its theoretical density in g/cm?. NA= 6.022 x 1023 atoms/mo. Express your answer in two decimal places only. Do not put the units.9. When a volatile liquid is completely vaporized in an Erlenmeyer flask, the volume of the flask (and thus the vapor) can be determined by one of two methods. One method is by filling up the whole flask with water and then finding out the water volume by pouring the water into a measuring cylinder over multiple times and read off its volume. • From the topics we learnt this semester, what do you think can be the other method of determining the volume of water in the flask? Which method do you think is more accurate? Why? (Suppose that, from measurements in a microscope, you determine that a certain layer of graphene covers an area of 2.50μm22.50μm2. Convert this to square meters