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A box contains a mixture of small copper spheres as well as small lead spheres. The total volume of both metals is calculated by the displacement of water to be 427 cm3 and the total mass is 4.36 kg. Explain what % of the spheres is copper?
The density of the metal is 8.526 g/cm3 and the specific heat of the metal is 0.429 J / g oC. If the metal foil absorbs 785.2 J of heat as its temperature changes from 21.64 oC to 33.45 oC, calculate the thickness of the metal foil in mm
If 100mL of 0.01 M CaCl2, 100mL of 0.01 M Sr(NO3)2 and 100 mL of 0.01 M Na2SO4 are mixed together; what is the Ca2+ concentrationin solution and which precipitates will form?
suppose the reaction ca3po43h2o4 3caso42h3po4 is carried out starting with 103 g of ca3po42 75 g of h2so4 .how much
If performing a HPLC on a complex mixture what things might I do to increase the resolution of the spectra. Be specific here please
Calculate E when 770.0 g of CH3OH(g) completely reacts at a constant temperature of 300 K and constant pressure of 0.95 atm. R = 8.314 J/mol*K and R = 0.08206 atm*L/mol*K.
How many kilograms of chalcopyrite must be mined to obtain 320.g of pure \rm Cu? Express your answer to three significant figures and include the appropriate units.
Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [N2]eq = 3.6 M, [O2]eq = 4.1 M, [N2O]eq = 3.3 × 10-18 M.
Balance the following redox equation using the smallest integers possible and select the correct coefficient for the Mn2+. Mn(s) + Cr2O72-(aq) + H+(aq) ? Mn2+(aq) + Cr3+(aq) + H2O(l)
calculate the number of atoms per cubic meter in aluminum. the density and atomic weight of aluminum are 2.70 gcm3 and
Assume that the metal rack is cooled from 240°F to 85°F, the temperature of the outlet water. The amount of heat removed from the retort walls in cooling from 240 to 100°F is 10 000 btu. Radiation loss from the retort during cooling is estimated a..
Kb for NH3 is 1.8 x 10^-5. What is the pH of a 0.35 M aqueous solution of NH4Cl at 25.0 degrees C? NH4 (aq) NH3(aq) + H+ +Cl-(aq)
What is the percent yield of a reaction using 10 moles of acetone and 16 moles of benzaldehyde and obtains
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