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A mixture containing only Al2O3 (FW101.96) and Fe2O3 (159.69) weighs 2.019 g.When heated under a stream of hydrogen, theAl2O3 is unchanged butFe2O3 is converted to metallic Fe plusH20(g). If a residue weighs 1.529 g, what is the wt% of Fe2O3 in the original mixture?
A 335 mL can of soda pop is found to contain 41 g of sucrose. What is the molarity of the solution with respect to sucrose?
What is the identity of the second major peak in the chromatogram and what is the third. What is your basis for these assignments
During the isomerization of trans-1,2-dibenzoylethylene C16H12O2 using 95% Ethanol C2H6O , and UV light irradiation. What is the overall equation for this reaction. What is the product.
1.00g each of NaCl,CaCl2,C6H12O6 dissolved in 100.0g water. What is the vapor pressure of the solution at 100C. What is the freezing point and boiling point
The equilibrium constant Kc equals 1.6 10-2 at 200°C. What are the moles of substances in the equilibrium mixture at 200°C if we start with 0.021 mol HBr in a 1.3-L vessel?
It is found that 3.8 mL of a 0.01 g/L solution of NaOH is required to completely react withe all HCl. HOw many moles of HCl are present
A solid mixture consists of 35.7 of KNO3 (potassium nitrate) and 6.3g of K2SO4 (potassium sulfate). The mixture is added to 130. of water. If the solution described in the introduction is cooled to 0
when liquid water is introduced into an evacuated vessel at 25deg c some of the water vaporizes. predict how the
to prepare a 13.9 kg dog (assume volume of 13.9 L) for surgery, 0.0343 moles of an anesthetic was administered intravenously. The reaction in which the anesthetic is metabolized displayed a first half life of 132.5 minutes and a second half life o..
A sample of diatomic gas has a density of 0.002061 g/mL at 1.8 atm pressure and 25.0 °C. Identify the gas.
Life is dependent on four major classes of biomolecules. What are they. Why are they important
How would you prepare 2-chloro-2-methyloctane in a lab begining with 2-methyl-2-octene and hydrochloric acid? It is reacted over heat with Ch2Cl2.
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