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A sample weighing 3.065 g is a mixture of Fe2O3 (molar mass = 159.69) and Al2O3 (molar mass = 101.96). When heat and a stream of H2 gas is applied to the sample, the Fe2O3 reacts to form metallic Fe and H2O(g). The Al2O3 does not react. If the sample residue weighs 2.717 g, what is the mass fraction of Fe2O3 in the original sample?
At a certain temperature and pressure 2.8 L of N2 reacts with 4.2 L of O2. If all the N2 and O2 are consumed, what volume of N2O3, at the same temperature and pressure.
The sulfur and hydrogen in the fuel are completed oxidized to SO2 and H2O. 8% of the carbon is oxidized to CO, and the balance forms CO2. Calculate the dry basis mole fractions of the flue gas
identify organic compounds in medications. determine the structure of one active component and identify three functional groups on each molecule.
Assume you dissolve 2.56g of malic acid, C4H605 in half a liter of water (500g). Calculate the molarity, molality, mole fraction, and weight percentage of acid in the solution.
Write the electron configuration of the atom in the third row of the periodic table that has the smallest E_{{rm{i}}4}.
Draw the structure of the product likely to be obtained from the reaction between acetoacetic ester, bromobenzen & 2 molor equivalents
Hydrangeas are flowers that retain blue coloration when grown in acidic soil and pink when grown in neutral or alkaline soil
a student measured 50.0 ml of a salt water solution (density=1.021 g/ml) into a flask. The Cl minus in the measured sample required 16.67 ml of 1.0466 M AgNO3 solution to reach the end point.
A solution of 120 mL of 0.150 M KOH is mixed with a solution of 260 mL of 0.200 M NiSO4. How many grams of the precipitate can be formed?
Using the inverse square law of radiation, what Geiger counter reading would you get for a radioactive material when you are 3 feet from the source
Determine the mass of phosphorus (P) is required to make 39 grams of this product?
How many liters of HCl at 100.0 oC and 740 mm Hg are produced from 150.0 g of C10H16?
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