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1. Calculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. First what is the initial pH (before any NaOH is added)? The Ka for HOCl is 3.0 x 10-8 M. 2.What is the pH after 2.40 mL of NaOH are added?
The ore is dissolved in hot, concentrated acid and passed over a reducing agent so that all the antimony is in the form Sb3 (aq). The Sb3 (aq) is completely oxidized by an aqueous solution of BrO3-(aq). Complete and balance the equation for this r..
Complete and balance an equation describing each of the above reactions. (Use the lowest possible coefficients. Omit states-of-matter in your answer.)
What is the molar mass of a covalent compound if 0.486 g of it is dissolved in 25.0 mL of water and produces a freezing temperature
For each of the following pairs of ions, determine whether a precipitate would form when solutions containing these ions are mixed and write the formulas of any precipitates that should form. Indicate the color of any precipitate that should form.
flask of nitrogen is collected over water at a total pressure 765.0 mm Hg. If the partial pressure of the water vapor is 25.0 mm Hg, what is the pressure exerted by the nitrogen?
calculate the molality of this solution (in mol solute/kg solvent).
When 4.0 g of sulfur is burnt in excess oxygen, 40 KJ of heat is evolved. What is the enthalpy change for the combustion of sulfur?
The Ksp for BaCO3 is 5.0 x 10-9. What is the molarity of a saturated aqueous solution of BaCO3
water skier is pulled by a net force of 180 N and has an acceleration of 2.4 m/s2. What is the mass of the skier?
A 12.0 g sample of solic NH4Cl is heated in a 5.00 L container to a high temperature. At equilibrium, the pressure of NH3 (g) is 1.22 atm. What is the value of Kp for the reaction
what is the freezing point of an aqueous solution of a nonvolatile solute that has a boiling point of 102.45 0C?
When 0.105 mol propane is burned in an excess of oxygen, how many moles of oxygen are consumed? The reaction is C3H8 + 5 O2 ? mol O2 = 0.105 mol C3H8 How many grams of nitric acid are produced for every 100.0 g NO2 that reacts?
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