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You are given 10.00 grams of a mixture of FeO and Fe2O3. Complete reduction of this mixture yields 7.58 grams of pure Fe. Calculate the mass of FeO and Fe2O3 in the original sample. (Show all your work including calculation.)
Using the method of successive approximations, what is [H3O+] in 0.00500 M CH2ClCOOH(aq) (Ka=1.4x10^-3) and how many iterations (n) are needed to validate that a constant value had been obtained? Express [H3O+] using two significant figures, follo..
What is the molar composition of the vapor in equilibrium with a boiling liquid that has a composition of 60% A and 40% B
When 26.0 mL of 0.675 M H2SO4 is added to 26.0 mL of 1.35 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate H of this reaction per mole of H2SO4 and KOH reacted.
59.0 ml of a solution of 1.70 m is diluted to a volume of 288 ml. determine the final concentration if a 144-ml portion
How many grams of sodium lactate should be added to 1.00 L of 0.150 M lactic acid to form a buffer solution with pH= 4.00? Assume that no volume change occurs when the sodium lactate is added.
A molecule can be polar or nonpolar depending upon the nature of the bonds and the shape of the molecule. For a molecule that has different outer atoms the molecular symmetry will decide the polarity.
At 320.0 K, an equilibrium mixture of NO2(g) and N2O4(g) has partial pressures of 393 torr and 292 torr, respectively. After a quantity of NO2(g) is injected into the mixture, the total pressure jumps to 812 torr.
If 2 atoms of silver metal react with 1 molecule of fluorine gas at constant pressure, 2 formula units of solid sodium fluoride are produced and 409.2 kJ of heat is released.
A certain substance has a heat vaporization of 44.74 kJ/Mol. At what Kelvin temperature will the vapor pressure be 6.00 times higher than it was at 341 K
The product contains a three carbon chain (from the alcohol) connected to a five carbon chain (from the acid) by an ester linkage. Review the structure of an ester. The sp3 intermediate contains three oxygen atoms, two from the acid and one from t..
Determine what mass of hydrogen is required to form 624g of methanol by the reaction CO+2H2->CH3OH.
Describe how a phospholipid differs from other fatty acids. How does this difference allow the formation of a bilayer in an aqueous medium
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