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1. A buffer solution that is 0.10 M sodium acetate and 0.20 M acetic acid is prepared. Calculate the initial pH of this solution. The Ka for CH3COOH is 1.8 x 10-5 M. As usual, report pH to 2 decimal places. 2. Calculate the pH when 27.6 mL of 0.048 MHCl is added to 100.0 mL of the above buffer.
draw the contributing resonance structures for each of the following species. label the structures as major or minor contributors.
How many GRAMS of zinc iodide are present in 1.56 moles of this compound? and explain to me how to find it
For each of the following reactions, calculate the grams of indicated product produced when 20.0 g of each reactant is used: a) 4Al(s)+3O2(g)-->2Al2O3(s) (Al2O3). b) 3NO2(g)+H2O(l)-->2HNO3(aq)+NO(g) (HNO3). c)C2H5OH(l)+3O2(g)-->2CO2(g)+3H2O(g) (H..
A solution is prepared by mixing 0.0300 mol CH2Cl2 and 0.0500 mol of CH2Br2 at 25°C. Assuming the solution is ideal, calculate the composition of the vapor
HCL is a significant component of gastric juice. what is the concentration of chloride ion in gastric juice at pH=1.27?
A sample of gas occupies a volume of 50.4 mL. As it expands, it does 125.5 J of work on its surroundings at a constant pressure
what is the total pressure in the reaction flask at the end of the reaction? What are the partial pressures of the gases in the flask?
Find the mass in grams of PbCl2 in the products. In a test tube you have 1.0 mL of 0.10 M of NaCl mixed with 1.0 mL of 0.10M of NaCl. 2 NaCl + Pb(NO3)2 --> PbCl2 + 2 NaNO3
How many kilograms of NH3 will be produced when 25.0 kg of CaCN2 react with excess water?
nitrobenzenesulfonic acid starting from benzene and using any needed organic/inorganic reagents.
The nucleus of an atom accounts for... A-most of the size and mass of the atom. B-very little of the size and mass of the atom. C-most of the atom\'s size but very little of its mass. D-most of the atom\'s mass but very little of its size.
A and B are stereoisomers. They are nonsuperimposable and are mirror images of one another. Which of the following best describes the relationship between A and B
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