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Calculate the pH of a buffer containing 0.030 M HC2H3O2 and 0.050 M NaC2H3O2. The Ka of HC2H3O2 is 1.75 x 10^-5
How many moles of H3O+ must be added to one liter of a solution to adjust the pH from 8.54 to 5.58? Use E notation and 3 significant figures.
traces of iron and titanium. If the sapphire were found to contain 0.155 g of oxygen, what is the mass of the gemstone?
Suppose that the atomic mass unit (amu) had been defined as one-sixth of the average mass of an atom of sodium instead of one-twelfth of the mass of an atom of carbon-12. What would the average atomic mass of magnesium be on this new scale
Consider the mechanism of reduction of WO3. At least two mechamisms are possible to the formation of HxWO3 during intercalation of WO3
In the structure of phenacetin is the NH group attached to the C=O and aromatic, would the NH group be considered an amide or an amine. Disscuss by IR spectrum and NMR? On my spectrum
if 625g of fe3o4 is produced in the reaction, how many molecules of hydrogen are produced at the same time?
the ha monoprotic acid is dissolved in h2o calculate ka and pka for the acid ha if the equilibrium concentrations of
How Many Grams of CaCl2 should be dissolved in 500 ml of water to make a .20 M solution of Calcium Chloride
A voltaic cell consists of an Mn/Mn2+ half-cell and a Pb/Pb2+ half-cell. Calculate [Pb2+] when Ecell is 1.017 V and [Mn2+] = 0.589 M. Use reduction potential values of Mn2+ = -1.18 V and for Pb2+ = -0.13 V
What mass of silver chloride can be produced from 1.27L of a 0.298M solution of silver nitrate
Under certain conditions, mixing furan with maleic anhydride in diethyl ether yields a crystalline solid wth a melting point of 114C. When melting point of this compound takes place
a saturated solution of copper(I) chloride, CuCl, has [Cu^+]=1.1x10^-3 M and [Cl^-]=1.1x10^3 M. what is the value of Ksp for CuCl
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