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A buffer is made using 49.0 mL of 0.760 M HC3H5O2 (Ka = 1.3 10-5) and 54.0 mL of 0.600 M NaC3H5O2. What volume of 0.20 M NaOH must be added to change the pH of the original buffer solution by 3.5%?
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A solution of hydrochloric acid has a volume of 250. mL and a pH of 1.92. Exactly 250. mL on 0.0105 M NaOH is added. What is the pH of the resulting solution?
The mass of a sample of CaCO3 is 751 grams How many total atoms are present in this sample?
A person's blood alcohol (C 2 H 5 OH) level can be determined by titrating a sample of blood plasma with a potassium dichromate solution. The balanced equation is 16 H + (aq) + 2 Cr 2 O 7 2- (aq) + C 2 H 5 OH (aq) 4 ...
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Use valence bond theory to explain the bonding in F2, HF, and ClBr. Sketch the overlap of the atomic orbitals involved in the bonds.
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Hydrazine, N2H4, is dibasic and has Kb1 = 3.35x10-7 and Kb2 = 1.42x10-16. Calculate the concentration of OH- ions in a 29.91 M aqueous solution of hydrazine. Express your answer in mM.
A sample consisting of 1.0 mol CaCO3(s) was heated to 800 °C, when it decomposed. The heating was carried out in a container fitted with a piston that was initially resting on the solid. Calculate the work done during co ...
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