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A solution of silver nanoprisms that are approximately 40 nm in length displays a purple color. Calculate the number of silver atoms in a single silver nanoprism with the shape of an equilateral triangle with an edge length of 40 nm and a thickness of 5 nm. The density of silver is 10.5 g/cm^3. and the area of an equilateral triangle is :sqrt((3)/4)a^2 where a = edge length of the triangle
At 1 atm, how much energy (kJ) is required to heat 65.0 g of H2O(s) at -20.0 degrees C to H2O(g) at 135.0 degrees C?
What is the minimum pressure (in torr) that must be applied across the semipermeable membrane to obtain water? Assume room temperature or about 298 K.
Hydrogen and oxygen react under a specific set of conditions to produce water according to the following equation. 2 H2(g) + O2(g) -> 2 H2O(g)
what is the molarity of the acetic acid solution if 45.0l of 17m acetic acid is diluted to
Why is molarity not the best means of stating acid strength? Is molarity the most representative form of quantifying acids and bases?
The rate of decomposition of C3H6 in the following reaction is 0.45 M/s. Calculate the rate of production of H2O. 2 C3H6 + 2 NH3 + 3 O2 → 2 CH2CHCN + 6 H2O
compute the atomic packing factor for the diamond cubic crystal structure shown in the figure below. assume that
Calculate the wavelength of light that is produced when the excited electron relaxes back tro ground state. givien sodium is the excited element
A student performs an extraction using water and methylene chloride. Which is the top layer and which is
An effective treatment for some cancerous tumors involve irradiation with "fast" neutrons. The neutrons from one treatment source have an average velocity of 3.2 x 10^7 m/s. If the velocities of the individual neutrons are known to within 2% of th..
Intially the vessel contains 3.0 moles of methane, 3.0 moles of xenon, and 4.0 moles of oxygen. What would the partial pressure of methane be if 2.0 moles of methane are added to the vessel? Assume that the volume and temperature of the vessel rem..
a weather balloon at earths surface has a volume of 3.9 l at 275 k and 775 mm hg. if the balloon is released volume
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