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Given a buret filled with 0.12 M acetic acid and a second buret filled with 0.18 M sodium acetate, how many milliliters of each solution should be mixed together to produce 20.5 mL of a solution with a pH of 4.90?
The specific heat capacity of the solution produced was 4.20 J/g•°C, and final temperature reached was 34.91°C. How much heat was produced by the dissolution
what is the pressure exerted onto the closed end of an apparatus if the atmospheric pressure is 720 torr and the height
write a short paragraph that describes how electrons fit into these higher levels and that explains why a space must be
the amount of h2o2 in 15.8g of hair bleach was determined by titration with a standard potassium permagnate
You have a solution that is 18.5 (v/v) methyl alcohol. If the bottle contains 1.09 of solution, what is the volume () in milliliters of methyl alcohol
How many grams of dry NH_4Cl need to be added to 1.60 L of a 0.700 it M solution of ammonia, NH_3, to prepare a buffer solution that has a pH of 8.62? K_b for ammonia is 1.8 * 10^{-5}.
What is the standard free energy change (kJ) for the following reaction at 499.0 K ? [Note: Answer should be expressed as "xxx.x", or with one sig fig after the decimal
Identify the number of electron groups around a molecule with a tetrahedral shape. a)4 b)3 c)5 d)2 e)1
what amount of heat is produced? The specific heat of aluminum is 0.90J/g C?
What is the pH of a solution that results from adding 150.0 mL of 0.200 M HCl to 150.0 mL of 0.350 M NH3? (Kb of NH3 = 1.8 x 10^-5)
Dry ice (solid ) has occasionally been used as an "explosive" in mining. A hole is drilled, dry ice and a small amount of gunpowder are placed in the hole,
Identify which of the following are oxidation-reduction reactions, and if they are, identify the oxidizing agent, the reducing agent, the substance being oxidized, and the substance being reduced.
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