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Treatment of a 0.400 g sample of impure potassium chloride with an excess of AgNO3 resulted in the formation of 0.7332 g AgCl calculated the percentage of KCl in the sample
We know that 100 cm3 of the mixture measured at 25C as well as 750 mm yields 84.5 cm3 of dry oxygen measured at 25C and 750mm after passage over CuO as well as the drying agent. Explain what is the original composition of the mixture. State balanc..
The solubility of pure nitrogen in water at 1 atm and 25 degress Celsius is 6.8E-4 M. Calculate the concentration of nitrogen in water under atmospheric conditions where the partial pressure of nitrogen is 0.78 atm.
MnO4-(aq) I-(aq)?Mn2 (aq) I2(s), the number of electrons gained in cathode is ( )
Problem- Calculate the ionic strengths of 0.01 M solutions of KNO3, Ca(NO3)2, ZnSO4, ZnCl2, K4Fe(CN)6, Fe(porphyrin)Cl.
The concentrations of Al and K in a sample of riverwater are 0.50 mg/kg and 1.3 mg/kg, respectively. Express the concentration in molality?
The feed to reactor contains only C 2 H 4 and HBr. if the molar flow rate = 165mol/s, compute the fractional conversion of the limiting reactant?
a sample of sugar d-ribose c5h10o5 of mass 0.727g was placed in a calorimeter and ignited in the presence of excess
Problem- Determine the percent ionzation of a mixture of 0.5 M solution of CH3NH3Cl and 0.4 M CH3NH2 at 25 degrees C.
Dinitrogen monoxide is still used as a general anesthetic. The Henry's law constant for the solubility of N2O in water is 2.5 x 10^ -2 mol/L x atm. What is the molar solubility of N20 in water if the partial pressure of N2O is 1500 mm Hg
A water sample is analyzed for a pollutant by the standard addition method . four solutions are prepared,each with a 10.00 ml aliquot of the water sample and varying amounts of a 10 ppm standard solutions of the pollutant
Question- Write the name of the major organic product (new fangle when appropriate) and input the JSME SMILES string for its skeletal structure for each of the following
Problem- 500.0 mL of 0.140 M NaOH is added to 545 mL of 0.250 M weak acid (Ka = 7.75 Ã- 10-5). 1) What is the pH of the resulting buffer
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