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1. When a 15.3 mL sample of a 0.454 M aqueous hydrofluoric acid solution is titrated with a 0.390 M aqueous sodium hydroxide solution, what is the pH after 26.7 mL of sodium hydroxide have been added?
pH = _______
2. What is the pH at the midpoint in the titration?
pH =When a 22.3 mL sample of a 0.492 M aqueous hydrocyanic acid solution is titrated with a 0.481 M aqueous potassium hydroxide solution
Water vapor will react reversibly with methane (CH4) to produce carbon monoxide and hydrogen gas. The equilibrium, with a Kc = 0.26, is established at 9270C in a 0.32L flask which contains 0.26mol CO, 0.091mol H2, and 0.041mol CH4. What is the con..
If 3.54 g of Ba3(PO4)2 are produced by the reaction BaCl2(aq) + Na3PO4(aq) --> NaCl(aq) + Ba3(PO4)2(s), how many grams of the starting material, BaCl2.
How do the theoretical energy values you calculated compare to the experimental energy you found by observation. Determine which energy transitions corresponds to which spectral line in the hydrogen emission spectrum
Calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels.
What is the wavelength of an electron whose linear velocity is 181.85 m/sec
an object weighing 335 n in air is immersed in water after being tied to a string connected to a balance. the scale now
The heat required to raise the temperature of a large cup of water (for coffee) from room temperature to boiling is approximately 100 kJ. Express this quantity of heat in kilocalories and British thermal units.
Calculate the concentration of each ion present in a solution that result from mixing 50 mL of a .20 M NaCLO3 solution with 25 ml of a .20 M Na2SO4. ASsume that the volumes are additive.
convalent bonds form when a 2 nonmetals combine b2 metals combine c a metalloid bonds to a nonmetal d a and c are true
What descriptive words would best portray the tone
A sample of H3A with a mass of 0.3606g was dissolved in water and titrated with 0.16M Ba(OH)2 solution.24.5mL of base were required to reach equilibrium point. What was the MM of the acid
Important information about balanced chemical equation, 1. If 1 mole of Al4C3 has a mass of 144g and carbon has a mass of 12g, what is the atomic mass of aluminum?
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