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Why does Acetyl Salicylic Acid (ASA) mixed with Fe3+ turn dark red and mixed with Salicylic Acid dark purple?
The temperature of a 12.58 g sample of calcium carbonate increases from 23.6 c to 38.2 C. if the specific heat of calcuim carbonate is 0.82 J/g-K, how many joules of heat are absorb
Explain how the enthalpy, entropy, and free energy of this system change as the dissolving process proceeds. Of the three parameters, ÄS, ÄH, and ÄG, specified in part 1, which has a sign different from the other two. Explain.
In recent years fresh bagel sales have been growing at about 30% per year. Once considered an ethnic food to be eaten with cream cheese and lox, bagels now "have become the new donut to bring to the office," according to Michael Goldstein of Goldstei..
Use the Born-Haber cycle to calculate the lattice energy of LiCl(s) given the following data: ?H(sublimation) Li = 155.2 kJ/mol; I1 (Li) = 520 kJ/mol; Bond energy (Cl Cl) = 242.8 kJ/mol; EA (Cl) = 348 kJ/mol; ?Hf (LiCl(s)) = -408.8 kJ/mol. A
If 10 grams of citral (C10H16O) are burned in excess oxygen, what is the mass of water and the mass of carbon dioxide that will be produced
Calculate the total length of the DNA in a human cell in m and in feet. Can this enormous length of DNA fit inside the nucleus of a cell? To find out do parts
at a certain temperature 15.0 moles of nitrogen gas and7.00 moles of hydrogen gas are placed in a 20.0 l glass
What is the equilibrium concentration of Cu+ (aq) in a solution that is 0.0200M solution in CuNO3 and 0.450M HCl (aq)
Copper crystallizes in a face centered cubis lattice. If the edge of the unit cell is 351pm, what is the radius of the copper atom
To convert from the volume by percent of a gas to the mole fraction of a gas (i.e. problem 35 from chapter 9), why is it that all you have to do is divide the volume percent by 100%
iron has a density of 7.874 gcm3. what is the mass of a rectangular block of iron with dimensions of 3.000 cm by 4.000
What is the wavelength (in meters) of a proton (mass = 1.673*10^-24 g) that has been accelerated to 30% of the speed of light.
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