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A mixture of 82.4 g of aluminum and 117.65 g of oxygen is allowed to react with the following reaction equation: 4 Al(s) + 3 O2(g) → 2 Al2O3(s)
a) Identify the limiting reactant.
b) Calculate the mass of aluminum oxide formed.
c) What is the percentage yield for the reaction if reaction mixture produces 120. g of aluminum oxide?
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How much Cl2, in grams, is required to produce 12.0g CCl4 according to the following reaction? CH4 + 4Cl2 ---> CCl4 + 4HCl
The acidic constituent in vinegar is acetic acid. A 10.0-mL sample of a certain vinegar contains 500. mg of acetic acid. What is this mass of acetic acid expressed in micrograms?
A piston exerting a pressure of 1.00 atm rests on the surface of water at 25 degrees C. The pressure is reduced reversibly such that 10.0 g of water evaporated and adsorbed 22.2 kJ of heat. Calculate w, q, change in U and change in H.
Determine osmolarity of solution when 25.0 grams of aluminum chloride dissolves in 2.50 liters of H2O.
A solution made by dissolving 1.20 g of the unknown compound in 25.0 g of benzene had a freezing point of 4.7 degrees Celsius
DRAW a flow chart to show how triphenylmethanol is purified by extraction. Indicate which layer contains the product.
If the density of an unknown gas is .0985 g/l at 25 degrees Celsius and 725 torr, calculate the density of the unknown gas at 48 degrees celcius and 740 torr
What is the function of a catalyst in a chemical reaction; does the mass of the catalyst change overthe course ofthe reaction?
Problem- The Ka of a monoprotic weak acid is 6.94x10^-3. What is the percent ionization of a 0.121M solution of this acid
What is the chemical equation of this coupled process? Show that the reaction is in equilibrium, include physical states, and represent graphite as C(s). What is the thermodynamic equilbrium constant for the coupled reaction
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