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Calculate the initial molarity of Ba(OH)2 and the molarities of Ba2+, OH -, and H3O+ in an aqueous solution that contains 0.38 g of Ba(OH)2 in 0.123 L of solution.
what is the redox reaction for MnO4- + 8H+ +5Fe2+ ______ Mn2+ + 5Fe3+ + 4H2O and which ion is oxidized and which one is reduced
a 50 ml vol. of 25 ppm solution of niiiis made fromnicl26h20.a.what is the concentration of niii in micromolar units.b.
If, at a given temperature, the equilibrium constant for the reaction H2(g) + Cl2(g) 2HCl(g) is ?6.0, then the equilibrium constant for the reaction HCl(g)
signs made from glass tubes filled with _________ and argon gases can light up when electricity is passed through them.
A 50.0-g piece of metal at 203oC is dropped into 400.0 g of water at 25.0oC. The water temperature rises to 29.0oC. Calculate the specific heat of the metal (J/goC). Assume that all of the heat lost by the metal is transferred to the water and no ..
When the reaction 2 H2S g ~ PCl3 + Cl2 is carried out at 1065 degrees celcius, Kp = 0.012. Starting with pure H2S at 1065degrees, what must the initial pressure of H2S be if the equilbrated mixture at this temperature is to contain 0.250 atm of H2..
The diatomic molecule AB has a dipole moment of 1.21 D and the A-B bond distance is 115 pm. Determine the percent ionic character of the bond in AB
What is the theoretical yield for this reaction under the given conditions? 1.40 g of H2 is allowed to react with 10.0g of N2, producing 1.65 g NH3.
1.given that the density of a solution of h2so4 is 1.1548 then calculate the molality of a 1.94 wt solution of
How many milliliters of 0.105 M HCl are needed to titrate 50.0 mL of a solution that contains 1.25 g of NaOH per liter?
What is the de Broglie wavelength in cm, of a 12.9 g hummingbird flying at 1.14 102 mph? (1 mile = 1.61 km.)
An evaluation of R was performed, following the procedure. The barometric pressure was 736torr, the temperature was 295K, and the volume of hydrogen gas collected was 35.6mL. The calculated value of R was 82.1 atm K-1 mol-1. How many grams of magn..
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