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If i use 0.212 g of benzaldehyde, 1.6ml of a solution containing 58 mg of acetone in ethanol. what is my mols of benzaldehyde and what is the mols of acetone? how do i determine the moles for acetone if its ethanol?
Treatment of ammonia with phenol in the presence of hypochlorite yields indophenol, a blue product absorbing light at 625 nm, which can be used for the spectrophotometric determination of ammonia.
at 4.0 degrees celsius pure water has a density of 1.00gml. at 60.0 degrees celsius the density is 0.98gml. calculate
A solution is initially 0.050M in acetate, CH3COO- (Kb = 5.6 x 10^-10). 10.0mL of 0.10 M HCl is added to 50.0mL of the acetate solution. The Ka for the conjugate weak acid of CH3CHOO- is 1.8 x 10^-5. Calculate the pH for this solution at equilibri..
A sample may contain any or all of the following ions: Hg22+, Ba2+, and Mn2+. No precipitate formed when a solution of NaCl or Na2SO4 was added to the sample solution
The pI can be estimated fairly accurately (within 0.1 or 0.2 pH units) from the pK values of all the proton dissociable groups in the peptide. Using pK values from the table at the right, estimate the pI value of the following hexapeptide
Determine the same activity coefficients for H+ and OH- in the same aqueous MgCl2 solution using the Extended Debye-Huckel law. -log
You start with 100.0 mL of a 0.2500 M solution of NaCl sitting in a beaker. After several days you test the solution and find that it is now 0.3125 M. How much water must have evaporated?
a 10.00-ml sample of sulfuric acid from an automobile battery requires 35.08 ml of 2.12 m sodium hydroxide solution for
Twenty grams of a solute are added to 100g of water at 25C. the vapor pressure of pure water is 23.76 mmHg, the vapor pressure of the solution is 22.41 torr.
Are certain organometals only made in the lab and not made through natural processes (made in the environment due to pollution)
calculate the molarities of solutions that contain the following masses of solute in the indicated volumes a 25.8 g of
What is the volume of a balloon that contains 34 moles of calcium bicarbonate?
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