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A 0.500 reaction vessel equipped with a movable piston is filled completely with a 3.00% aqueous solution of hydrogen peroxide. The decomposes to water and gas in a first-order reaction that has a half-life of 10.7 . As the reaction proceeds, the gas formed pushes the piston against a constant external atmospheric pressure of 738 .
Calculate the work done (in joules) after a reaction time of 4.22 . (You may assume that the density of the solution is 1.00 and that the temperature of the system is maintained at 20 .)
Enough of a monoprotic acid is dissolved in water to produce a 0.0142 M solution. The pH of the resulting solution is 2.51. Calculate the pKa for the acid
If a 1.55g sample of zinc is heated with excess sulfur to form 2.31g of zinc sulfide, calculate the mass of sulfur used.
When 100.g Mg3N2 reacts with 75.0 g H2O, 15.0 g of NH3 is formed. What is the % yield?
A physician studying a mutant, hemoglobin, blood protein dissolves 0.0215 grams of this protein in water at 5.0 °C to make 1.50 ml of solution. The osmotic pressure of this solution is 0.00475 atm. What is the molar mass of this protein
for the equation 3fe4h2o4h2fe3o4 if 625 g of fe3o4 is produced in the reaction how many moles of hydrogen are produced
a sample of 100.0 mlnbsp of 0.10 m ammonia nh3 is titrated with hno3 of 0.10 m. find out the ph of the solution after
determine the mole fraction biphenyl c12h10 in a 0.555m c12h10 solution in c6h6 benzene ?write down the balanced
Compute the initial pressure of the gas in the cylinder. b. Compute how much heat must be added to the gas in the cylinder for the spring to compress by 2cm
Compare your predicted bond lengths and angles, and those predicted by the program, to the actual measured values in the given table. Which modeling system gave better results. Explain any differences and limitations to the method you used for pre..
What are the respective concentrations (M) of Mg+2 and C2H3O2- afforded by dissolving 0.600 mol Mg(C2H3O2)2 in water and diluting to 135 mL
Consider the reaction CaCN2 + 3 H2 O → CaCO3 + 2 NH3 . How much CaCO3 is produced if 47.5 moles NH3 are produced?
Find the pH of the equivalence points and the volume of 0.0372 M NaOH needed to reach it in titrations of
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