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Consider a spherical gold nanoparticle that is 3 nm in diameter. If the diameter of an atom is approximately 3 A?, how many atoms are on the surface of the particle? What fraction of the gold atoms in the particle are on the surface?
How many grams of ice at 0°C and 101.3kPa could be melted by the addition of 0.40kJ of heat? Find the molar heat of fusion.
The atmospheric pressure 4.The volume for the vapor to occupy above the liquid 5.The temperature of the liquid
copper is electroplated from CuSO4 solution. A constant curent of 4.39 A is applied by an external power supply. How long will it take to deposit 1.00x10^2g of Cu
Calculate the solubility of Ca(OH)2 in a 0.469M CaCl2 solution at 31°C, given that the Ksp of Ca(OH)2 is 4.96 x 10-6 at that temperature. Give your answer in milli Molar units
Assume that fructose is a molecular solid and does not ionize when it dissolves in water.
How many grams of nitrogen dioxide (NO2) are required to produce 260 grams of nitrogen monoxide, NO?
What is the power output of the turbine? H1= 1322.6 Btu/lbm v1=3.058 (ft)^3/lbm H2= 1148.6 Btu/lbm v2=78.14 (ft)^3/lbm
A sample of H2SO4 contains 1.11 grams of H (1.01 g/mol). How many moles of H2SO4 (98.02 g/mol) are present?
What mass of sucrose should be combined with 521 of water to make a solution with an osmotic pressure of 8.15 at 285 ? (Assume the density of the solution to be equal to the density of the solvent.)
How does this affect the reported solubility product of borax at that temperature? Explain. Temperatures can range from 4.4 degrees C, 17.1 degrees C, 34.6 degrees C, 41.6 degrees C, and 50.6 degrees C.
to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.
Suppose you have a sample of sodium weighing 11.62 g. How many atoms of sodium are present in the sample?
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