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Gold nano particles are being studied by material scientists for a variety of uses, including the treatment of cancer and other diseases. Consider specifically a spherical gold nano particle with a diameter of 33.0 nm. The atomic weight of gold is 196.7 g/mol and the atomic radius is .144nm. The crystal structure is FCC. a. Calculate the lattice parameter of the unit cell. . b. Use calculated lattice parameter to find the density of gold. c. Assuming this particle is a single crystal, how many unit cells are lined up across the diameter of the particle? d. Calculate the mass of the particle. e. Approximately how many atoms does this particle contain?
If iron is oxidized to Fe2+ by a copper(II) sulfate solution, and 0.704 grams of iron and 12.6 mL of 0.581M copper(II) sulfate react to form as much product as possible,
Write the reactions responsible for the LIQUID PHASE oxidation of S(IV) to S(VI), and show how the oxidation can lead to a decrease in pH of rain water.
Rate of reaction for 8H2S +4O2 -> 8H2O + S8, if started with 21.35g of H2S and 15.36g of O2. What is the limiting reactant and how much S8 can be produced?
What mass of HCl is consumed by the reaction of 3.84 mol of magnesium? Answer in units of g.
A 36.4 l volume of methane gas is heated from 15 degrees C to 98 degrees C at constant pressure. what is the final volume of the gas?
An experiment requires 44.0 g of ethylene glycol, a liquid whose density is 1.114 g/mL. Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder. What volume of the liquid should he use?
A meteorological ballon contains 250.0L He at 22 degrees celsius and 740.0mm Hg. If the volume of the ballon can vary according to external conditions
calculate the approximate mass of KHP required to react with 40.0 mL of 0.125 M sodium hydroxide in titration.
Nitrogen and oxygen gases react to form dinitrogen trioxide gas. 2 N2(g) + 3 O2(g) -> 2 N2O3(g) At a certain temperature and pressure 4.2 L of N2 reacts with 6.3 L of O2.
Alkenes can be hydrated to form alcohols by: (1) hydroboration followed by oxidation with alkaline hydrogen peroxide; (2) acid-catalyzed hydration
Anton Von L. a 17th century pioneer in the use of the microscope, described the microrganisms he saw as "animalcules" whose length was "25 thousandths of an inch."
When 20 mL of a 120 mL stock solution containing 2 M BaF2 is diluted to 80 mL, what is the concentration of F- in the new solution.
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