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A buffer is composed of 0.400 mol H2PO4 and 0.400 mol HPO4 diluted with water to a volume of 1.0 L. The pH of the buffer is 7.210. How many moles of HCL must be added to decrease the pH to 6.210? The answer is .327 mol. Can you please explain how they worked this problem.
Which one of the following compounds will be most soluble in water?
Among the elementary subatomic particles of physics is the muon, which decays within a few nanoseconds after formation. The muon has a rest mass 206.8 times that of an electron. Calculate the de Broglie wavelength associated with a muon traveling..
The pH of the solution at the equivalence point, The pH of the solution after 40.0 mL of HCl are added.
Calculate the boiling point of a solution prepared by dissolving 70.0 g of naphthalene, C10H8 (a nonvolatile nonelectrolyte), in 220.0 g of benzene, C6H6. The Kb for benzene = 2.53°C/m. The boiling point of pure benzene is 80.1°C.
What is the partial pressure of hydrogen gas in a mixture of hydrogen and helium if the total pressure is 588 mm Hg and the partial pressure of helium is 445 mm Hg?
How much will the pH change? The pKa of acetic acid is 4.760.
Commercial electrolytic cells for producing aluminum operate at 5 volts and 100,000 Amperes. How long does it take to produce 1000 kilograms of aluminum
Complete and balance the following equations, and identify the oxidizing and reducing agents. Recall that the O atoms in hydrogen peroxide, H2O2, have an a typical oxidation state.
The molar enthalpy of vaporization of boron tribromide is 30.5 kJ/mol, and it's normal boiling point is 91degrees C. What is the vapor pressure of BBr3 at 34 degrees C.
Copper metal reacts with hot concentrated sulfuric acid solution to form aqueous copper (II) sulfate, sulfur dioxide gas, and water. Write the balanced chemical formula.
a colorless liquid that is commonly known as grain alcohol, is 0.789 g/mL. Calculate the mass of 17.4 mL of the liquid.
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?
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