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Calculate the Ka of an unknown monoprotic acid .When 15ml of the acid was titrated with 28 ml of 0.15M sodium hydroxide the equivalence point was reached at a ph of 8.48
Evaluate the efficiency for a compression ratio of 10:1. Assume that, in state A, V = 4.00 dm3, p = 1.00 atm, andT = 300 K, that VA = 10VB , pc /pb = 5, and that Cpm = 7/2 R
Chemicals available for extractions: CH2CL2, 1M NaOH, 1M HCL and sodium sulfate for drying
A farmer applies 1400.0 kg of a fertilizer that contains 10.0% nitrogen to his fields each year. 15.0% of the fertilizer washes into a river that flows through the farm.
when 0.500 l of a 2.00 m solution of Pb(NO3)2 is mixed with an excess of 1.00m solution of Ki, how many grams lead (II) iodide are formed? ( molar mass: Pb(NO3)2= 331 g;KI 166g; PbI2 =467 g; KNO = 101 g
Calculate the kinetic energy of an electron ejected by a photon with wavelength 1.91 x10^2 nm from a metal with a binding energy of
Draw the carboxylic acid would be formed if the malonic ester synthesis (alkylation of diethyl malonate followed by hydrolysis and decarboxylation) were carried out with a large excess of diethyl malonate, one equivalent of 1,5-dibromopentane, and..
What is the balanced chemical equation for its reaction with nitric acid? Write the balanced chemical equation for its reaction with a potassium hydroxide.
the usefulness of the addition of an internal retention time standard that elutes near the end of the chromatogram
It takes 53.0 to raise the temperature of an 10.2 piece of unknown metal from 13.0 to 24.0. What is the specific heat for the metal
Carbon dioxide dissolves in water to form carbonic acid. Estimate the thermodynamic equilibrium constanst (K) for this reaction (delta Gf values: H2CO3= - 616.1, H2O= - 237.1, CO2= - 394.4) .
What mass of melamine will be obtained from 168 kg of urea if the yield of the overall reaction is 79.0%
Use the van der Waals parameters for chlorine to calculate approximate values of (a) the Boyle temperature of chlorine and (b) the radius of a Cl2 molecule regarded as a sphere.
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