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Equal quantites of the hypothetical strong acid HX weak acid HA and weak base BZ are added to seperate beakers of water producing the solutions depicted in the drawings. In the drawings the relative amounts of each substance present in the solution(neglecting water) are shown. Identify the acid or base that was used to produce each of the solutions (HX, HA, or BZ)H3O+OH-
What concentration of aqueous NH3 is necessary to just start precipitation of Mn(OH)2 from a 0.020 M MnSO4? Kb for ammonia 1.8 x 10^-5, Ksp for Mn(OH)2 4.6 x 10^-16.
A solution is made by mixing 12.0 g of NaOH and 75.0 mL of .200 M HNO3. Write a balanced equation for the reaction that occurs between the solutes. Calculate the concentration of each ion remaining in solution. Is the resultant soluiton acidic or ..
What is the the mole fraction of a solution prepared by dissolving 0.315 g of cholesterol
Given that a 2.00 molar aqueous solution of ammonium phosphate has a density of 1.09 g/mL. Calculate molal and mass percent pf ammonium phosphate in solution.
Which weak acid would be best to use when preparing a buffer solution with a pH of 9.70? An acid with Ka = 3.2 × 10^-5 An acid with Ka = 4.0 × 10^-7 An acid with Ka = 1.3 × 10^-11 An acid with Ka = 2.1 × 10^-10
what mass in grams of carbon dioxide is produced if 85.0 mol of magnesium carbonate mgco3 are heated and allowed to
Suppose a 24.3-mL sample of helium gas at 25 °C and 1.01 atm is heated to 50. °C and compressed to a volume of 15.2 mL. What will be the pressure of the sample?
Two students weighed a 125-ml beaker that had a mass of 80.562g on a calibrated top-loading balance. Each student used their own top-loading balance, recorded three mass readings for the beaker
The atomic mass of Potassium 39 is 38.96371 AMU. Calculate the binding energy for a mass of this nuclide using 1.008665 AMU for the mass of the neutron, 1.007276 AMU for the mass of the proton, 0.00054858 AMU for the mass of the electron
Calculate the rpoportion of I2 (iodine) molecules in their ground state, first excited stated
What is the theoretical yeild of sodium carbonate for the equation: 2NaHCO3(s)--> Na2CO3(aq) + H2O(g) + CO2(g)
if it takes 526 j of energy to warm 7.40 grams of water by 17 degrees celsius how much energy would be needed to warm
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