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How many kilograms of chalcopyrite must be mined to obtain 325g of pure Cu?
If you pipetted 50.00mL sample of an unknown brime and titrated it with 37.64mL of 0.1024M of silver nitrate solution. Calculate the ppm of sait (NaCl) in the sample.
question an aqueous solution of potassium phosphate is mixed with an aqueous solution of calcium nitrate. a precipitate
Frank and Oswalt report a molar absoptivity of 4700 L mol -1 cm-1 for the thiocyanatoriron(III) ion. What % T would you expect for a solutions that is 1.0x10-4 M in thiocyanatoiron(III) ion, if the path length is 1.00 cm
How would you distinguish experimentally between an amphourous, a crystalline and a crosslinked polymer
Sometimes during a reaction contamination can be introduced into the sample. If this happens which of the following would be true about the mass of the sample if it were contaminated
What volume of 0.150M HClO4 solution is needed to neutralize 45.00mL of 8.80×10^-2 M NaOH?
Suppose a 5-volt battery is delivering a steady current of 5 A for a period of 4 hours. Calculate the total charge in coulombs that passes through this circuit.
A pipette is used to add 46 mL of 0.3 M Pb(NO3)2 to a 273.0 mL solution of 0.3 M NaF. Determine the equilibrium concentration of Pb2+(aq) in the final solution. Ksp(PbF2)=3.6E-8
How would this change the experimental procedure for the conversion of CuSO4 to metallic copper
Gold has cubic crystals whose unit cell has an edge length of 407.9 pm. The density of the metal is 19.3 g/cm3. Calculate the number of gold atoms in a unit cell. What type of cubi lattice does gold have
A mixture of N2, O2, and CO2 has a total pressure of 791. torr. In this mixture the partial pressure of N2 is 115. torr and the partial pressure of O2 is 193. torr.
you are the environmentalofficer attatched to pesticide and toxic chemicals control board. prepare a technical brief
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