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A titration is carried out to determine the concentration of the acid in an old bottle of aqueous HCl whose label has become unreadable.What is the HCl concentration if 32.1mL of 0.250M NaOH is required to titrate a 30.0mL sample of the acid?
What are the equilibrium concentrations of the dissolved ions in a saturated solution of Al(OH)3 at 25 degrees celcius? (Ksp is (2x10^-32))
the corresponding sound. If you are 480.0 m from the explosion and the speed of sound is 340 m/s, calculate the distance traveled by the light during the brief delay required for the sound to reach
When a 1.90 mg sample of methane burns in excess oxygen, how many grams of water and carbon dioxide are formed?
to find the by mass of a compound in a given sample.dissolving 3.00 g of an impure sample of calcium carbonate in
Write electron pushing mechanism of Friedel-crafts acylatoin of anisole with acetic anhydride as acylating reagent and aluminum chloride and CH2Cl2
A cell that uses bromine to oxidize hydrogen H^+ under standard conditions at 298 K has a positive potential.
A buffer solution of a weak base and its salt had a pH of 5.26 when the base was 0.123 M and the cation was 0.747 M. Calculate the equilibrium dissociation constant (Kb).
universe on assumption that heat capacities are independent of temperature
In a study of the effect of temperature on halogen decomposition. 0.50 mol of I2 was heated in a 2.5 L vessel and the following reaction occurred. I2 (g)--> 2I (g)
how many joules of heat are needed to completely vaporize 24.40 g of water at its boiling point?
prepare 100 mL each of five standard solutions: 2.00 x 10-5, 5.00 x 10-5, 1.00 x 10-4, 2.00 x 10-4, and 5.00 x 10-4 M. These will serve as your analytical standards, which means that their phosphate concentrations must be precisely known.
Based on the first and fourth sketches(Part C figure) , what is the density of the block? First sketch shows mass of the block = 50g. Second sketch shows block completely immersed in water(at 20 degree Celsius), mass of block now = 5.6g and densit..
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