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1) 0.8 moles of acetic acid (weak acid) is added to 1.25 liters of water and the pH is adjusted to 5.8. what is the concentration of acetate ion?
2) 0.8 moles of acetic acid (weak acid) is added to 1.25 liters of water and the pH is adjusted to 5.8. what is the concentration of unionized acetic acid?
3) 0.8 moles of acetic acid (weak acid) is added to 1.25 liters of water and the pH is adjusted to 7.0. What is the concentration of acetate ion?
4) 0.8 moles of acetic acid (weak acid) is added to 1.25 liters of water and the pH is adjusted to 7.0. What is the concentration of unionized acetic acid?
No desiccator is available. The sodium carbonate is cooled to room temperature, but the humidity in the room is high. how will this affect the reported molar concentration of the hydrochloric acid
A 27.0-gram sample of an unknown hydrocarbon was burned in excess oxygen to form 88.0 grams of carbon dioxide and 27.0 grams of water. What is a possible molecular formula of the hydrocarbon?
Imagine that 1.00 mol H2O(l) is placed in a piston with a constant external pressure Pext = 1 bar. The piston is then placed in a large thermal bath at a temperature of 270 K.
How many grams of aluminum must be used to produce 5.00 grams of hydrogen gas?
Describe the major organic product(s) of this reaction. CH3C?CD + CH4 or CH3C?CCD or CH3C?CCH3 or CH3C?CD + CH3D or CD3C?CD3
Calculate the quantity of NH3 is produced upon reaction of 4.0 moles of water and 65.0 g of CaCN2.
Methane gas (CH4) comprises 7 x 10-5 % by mass of the Earth's atmosphere. What is the residence time of the gas in the atmosphere if it is being lost to the methane sinks at the rate of 4 x 1011 kg yr-1.
A container with 644 mL of oxygen gas is at a pressure of 11.6 kPa. What pressure would be required to decrease the volume of the gas to 439 mL, assuming no temperature change?
Sodium Bisulfite UseThe non-shrinking, non-warping nature of ultramarine blue, along with its exceptional heat and light stability has led to the development of a range of high quality ultramarine blue pigments specifically for masterbatchs applicati..
Sulfhydryl groups have the ability to react with the alkylating reagent N-ethylmaleimide (NEM) in chemical modification experiments. When NEM is added to a purified solution of creatine kinase
A sample of zinc weighing 2.077 g is dissolved in 2.00 M HCl. What (minimum) volume of HCl is required to dissolve the Zn? (Zn dissolves in HCl to form Zn2+
To this vessel 8.6787g of Ne are added in such a way that no butane escapes. The total pressure of the vessel (at the same temperature) is 1420 torr. Calculate the volume of the vessel and the mass of the butane.
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