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If magnesium oxide smoke has been lost in too great an amount during the heating of the crucible would this have made the calculation % Mg in the product too high or too low? Explain.
A vessel of volume 22.4 L contains 2.0 mol H2 and 1.0 mol N2 at 273.15K. calculate (a) the mole fractions of each component, (b) their partial pressures, (c) their total pressure , (d) the density of the mixtures.
Calculate the equilibrium constant for the dissolution of calcium carbonate at pH=6 in the presence of EDTA as shown below: CaCO3(s) + EDTA^4- (aq) + H+(aq) --> [Ca(EDTA)]2-(aq) + HCO3 (-1 charge)(aq)
The head of a strike anywhere match contains tetraphosphorous trisulfide, P4 S3. In an expriment, a student burned this compound in an excess of oxygen and found that it evolved 3677 KJ of hea per mole of P4S3 at a constant pressure of 1 atm.
What is the maximum concentration, in mol/L and mg/L, of Cu^2+ and Zn^2+ in a solution that contains both ions if the pH is (a) 10.00, (b) 11.00, (c) 12.00
Calculate the number of grams of CuSO4 needed to make 50.0 ml of a .25M solution of CuSO4 in 3.0M HCl.
In Denver, the Mile-High City, water boils at 95 C. What in atmospheres in Denver Hvap for H2O is 40.67 kj/mol
Calculate the amount of heat required to raise the temperature of 1500g of water from 25C to 63C
Calculate the concentration of ions in the following saturated solutions. Al3+] in Al(OH)3 solution with [OH -] = 2.6 10-9 M
What is the pH at the equivalence point for the titration of 0.20 M HCl with 0.20 M NH3?
The smallest atoms can themselves exhibit quantum mechanical behavior. Calculate the de Broglie wavelength (in pm) of a hydrogen atom traveling 475 m/s
Calculating Delta H, Use some or all of the following reaction enthalpies to calculate delta H for the reaction:
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
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