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Find the concentration of Pb2 in 0.0010 M KI saturated with PbI2. Include activity coefficients in your solubility-product expression.Ksp=9.8x10^-9
Name a compound with the formula, C5H12, which will show only one peak in the NMR spectrum.
What was the temperature change of the metal? C) Calculate the specific heat and the atomic mass of the metal. What is the metal?
calculate the minimum energy a photon must have to produce an electron hole pair in an extrinsic semiconductor of band gap 1.3 electron volts.
how many ice cubes are needed to cool 500 g of water initially at 23 c to 0.0 c if each cube at 0.0 c contains one mole of water.
A cube of lead (? = 11.3 x 103 kg/m3) is placed in a pool mercury (? = 13.6 x 103 kg/m3). The cube of lead is 3.60 x 102 cm on a side. Calculate the percentage of the cube that is above the pool of mercury.
if 5.50 mol calcium carbide reacts with an excess water, how many moles of acetylene will be produced?
How many grams of IKI (iodine-potassium iodide; molar mass = 166.0 g/mol) would it take to obtain a 100.0 mL solution of 0.300 M IKI? How many grams of IKI would it take
gasoline has the density of .73g/cm^3. how many liters of gasoline would be required to increase the mass of an automobile from 1271 kg to 1305 kg.
What are the lowest possible values of the principle quantum number (n) when the angular momentum quatum numer (l) is1?
How much heat is released when 50.0 grams of water at 100 degree celcius hits the skin and cools to a body temperature of 37 degree celcius.
Your stock solutions are 20% glucose, 1M tris and 0.5M EDTA. The diluent is distilled water. Determine how much of each you will add to make the desired buffer.
For the reaction SO3+H2O=H2SO4 calculate the percentage yield if 600 g of sulfur trioxide react with excess water to produce 475 g of sulfuric acid
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