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Cryolite, Na3AlF6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. Balance the equation. If 15.1 kilograms of Al2O3(s), 58.4 kilograms of NaOH(l), and 58.4 kilograms of HF(g) react completely, how many kilograms of cryolite will be produced? Which reactants will be in excess? What is the total mass of the excess reactants left over after the reaction is complete?
A mixture of acetone as well as toluene is boiled at 80 degrees C and at 760 mmHg. Explain what is the ratio of acetone to toluene in the VAPOR phase
Calculate the pH of the solution resulting from the addition of 20 mL of 0.10 M NaOH to 100 mL of 0.10 M HCN (Ka = 4.9x10^(-10))
Using molecular orbital theory, determine which of the following species are paramagnetic: O2, O^2-, O2^2-
What is the value of q when 0.0209 g of water vaporizes at 373 K? The enthalpy of condensation of water at 373 K is -40.7 kJ/mol.
When a substance is heated it glows and emits a certain amount of radiant energy that corresponds to particular energies in the electromagnetic spectrum.
For a solution of 0.10M H3PO4, calculate the concentration of all the ionic species in solution (i.e., H+, OH-, H2PO4-, HPO42-, PO43-)
A weak monoprotic acid is exactly neutralized by 11.17mL of a standardized 0.1455M NaOH solution. If the Ka of the acid is 0.00084, what is the pH at the half-equivalence point.
Problem- Calculate the pH of a solution made by mixing equal volumes of a solution of HCl with a pH of 1.44 and a solution of HNO3 with a pH of 2.74. Assume the volumes are additive
In the experiment aniline and acetic anhydride are reacted to form acetanilide, how do you calculate the theoretical yield of acetanilide?
Calculate the amount of hydrogen (gmol/min) that needs to be burned in order to completely eliminate the need for addition of heat to the reactor.
If a solution is made by mixing 20.0mL .4M NaCH3COO with 30mL .4 CH3COOH, calculate the pH for acetic acid, Ka = 1.76x10^-5.
Problem- Gallium is produced by the electrolysis of a solution obtained by dissolving gallium oxide in concentrated NaOH(aq). Calculate the amount of Ga(s) that can be deposited from a Ga(III) solution by a current of 0.350 A that flows for 60.0 m..
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