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A buffer is prepared by adding 42.0g NaH2PO4 to 1.0 L of solution that is .10M NaPO4. assuming no volume change. What's the concentration of H2PO4 solution?
When 100.g Mg3N2 reacts with 75.0 g H2O, 15.0 g of NH3 is formed. What is the % yield?
Show the hybridization of the bonding orbitals for germanium tetrafluouride. a. determine type of hybrid formed b.type of molecular geometry
Microwave ovens emit microwave energy with a wavelength of 12.2 cm. What is the energy of exactly one photon of this microwave radiation
The relative electrophoretic mobilities of a 30-kd protein and a 92-kd protein used as standars on an SDS polyacrylamide gel are 0.80 and 0.41, respectively.
What is the specific heat for the metal if It takes 48.0J to raise the temperature of an 8.60g piece of unknown metal from 13. Degree Celsius to 24.3 degree celsius?
The overall equilibrium involves Ksp, Ka3 of phosphoric acid and Kw. Construct the constant and show the three equations that apply.
A compound containing only carbon, hydrogen and oxygen was analyzed by combustion analysis. Combustion of a 10.68g sample of the compound in excess oxygen gives 16.01g CO2 and 4.37g H2O.
compounds are dissolved in 1.00 L of w ater: 0.220 mol HA (K a = 1.36 x 10 - 3 ), 0. 18 mol NaA, 0.0 8 mol H 2 SO 4 , and 0.08 mol KOH . What is the pH of the resulting solution?
a 0.4 kg aluminum part increases its temperature by 25 degrees celsius. how much thermal energy is transfered to the part by heat?
what would be the volume of an ideal gas at absolute zero? what happens to real gases before they reach absolute zero?
What is the chemical formula for the compound formed between calcium and chlorine. What is the chemical formula for the compound formed between calcium and oxygen
A 20.0 mL sample of hypobromous acid (HBrO) was titrated with 0.180 M KOH. To reach the equivalence point required 27.75 mL of KOH. Ka for HBrO is 2.8 x 10^-9
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