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Briefly differentiate between solvent extraction and chromatography. What roles do these two techniques play in analytical chemistry?
at 700.degc the total pressure of the system is found to be 3.45 atm. if the equilibrium constant kp is 1.52 calculate
The product is collected over water at 25.0 . How much time is required to produce 146.0 of the products at a barometric pressure of 753.7. The vapor pressure of water at this temperature is 23.8.
Calculate the minimum energy a photon must have to produce an electron hole pair in an extrinsic semiconductor of band gap 1.0 electron volts.
If no heat is lost to the surroundings, what will be the final temperature of the mixture?
She then took 15.0 mL of the stock solution and diluted it with enough water to make 65.0 mL of a final solution. What is the concentration of KOH for the final solution.
what is the empirical formula of a compound that is 62.0% C, 10.4% H, and 27.5% O by mass
Calculate the pH of a system composed of 0.135 M HC7H5)2, benzoic acid and 0.176 M KC7H5O2, potassium benzoate.
consider the following reaction at a fixed temperature. 2so3g 2so2g o2g when the initial concentration of so3g is
A 65 L sample of dry air cools from 133°C to -16°C while the pressure is maintained at 2.85 atm. What is the final volume?
If you are to construct the molecular orbital energy diagram of ScBr, do you think the energy levels will be closer to the atomic orbital energy of Sc or Br. Why.
Write a balanced equation for the neutralization of each of the following: a)H3PO4(aq) and NaOH(aq) b)HI(aq) and LiOH(aq) c)HNO3(aq) and Ca(OH)2(s)
what rate is heat released/absorbed (express in kW and state whether released or absorbed) when 4050 mol/h of liquid water are produced
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