Determine the mass of aluminum oxide reacted
Determine the mass of aluminum oxide reacted if the 385g of Al was formed and the percent yield was found to be 89.3%. Anhydrous aluminum oxide is reduced to the aluminum according to the chemical equation:
2Al2O3→ 4Al+3O2
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Determine the percent by mass of citric acid in the sample. Indicate clearly your calculations and reasoning if 2.135 g of unknown requires 19.90 mL of 0.688 M NaOH for complete neutalization of all reactive protons.
The electron density in copper is around 8.49 x 10^28 electrons/m^3. The electron charge is e = -1.60 x 10^-19 C. If a 1.00 Amp current is present in a copper wire having a 0.40 cm^2 cross section, the electron drift velocity, in m/s, with directi
Determine the melting temperature at a pressure of P= 1.00x10^3 atm if the heat capacity? Cp,m= 7.98J/K mol and if? Vm=3.10mL/mol. For a protein denaturation the entropy change is 2.31J/K mol at P =1.00 atm and at the melting temperature T=338K.
Which is the limiting reactant and determine the maximum mass of sodium carbonate that can be formed, if 68.0 g. of sodium hydroxide and 44.0 g. of carbon dioxide are allowed to react?
A school psychologist is interested in estimating the effectiveness of an antidrug film on the attitudes of eight-grade students. Each students' antidrug attitude is measured on a scale from 0 to 20 (20 representing the strongest opposition
The airplane makes the 990km flight with the tailwind and returns, flying into same wind. Total flying time is 3 hrs 20 minutes, and airplane's speed in still air is 600km/hr. Find speed of wind?
Ammonia is produced industrially from the reaction of hydrogen and nitrogen. Write down the balanced chemical equation for this reaction, and describe the largest mass of NH3 that could be formed from the reaction of 15g of H2 and 105g of N2.
A thin spherical shell begins from rest and rolls down the incline. The coefficient of static friction among the shell and incline is (Us=.3). Determine the maximum angle of incline such that the shell will roll with no slippage?
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