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Explain how to write a balanced chemical equation (with phases identified) for the neutralization reaction that occurs for HF (aq) and Ba(OH)2(aq).
A voltaic cell is built, using the anode reaction Cu (s)=Cu^+2(aq)+2e^- and the cathode reaction Fe^+3(aq)+1e^-=Fe^+2(aq). If [Cu+2]=.50M [Fe^+2]=.10 M and [Fe^+3]=.20 M, what will the Ecell be
Rank the relative nucleophilicity of the indicated species in ethanol. CH3OH CH3S- CH3COOH CH3O- CH3COO-
The sulfuric acid in a car battery has a density of 1.225 g/cm3 and is 3.75 M. What is the molality, mole fraction, and percentage of sulfuric acid by mass in this solution?
On a certain winter day in Utah, the average atmospheric pressure is 738 torr. What is the molar density (in mol/L) of the air if the temperature is -18 degrees Celsius
If a reaction between Zn and I2 takes place, are the physical and chemical properties of the substances isolated during and after mixing the same as or different from those of Iodine and Zinc? Explain using the reaction as an example.
According to the following chemical reaction, what happens when excess sulfuric acid is added. 2CrO42- (aq, yekllow) + 2H3O (aq) Cr2O72- (aq, orange0 + 3H2O (l)
What must be the initial concentration of reaction, [A]0, if (a) the zero- and first-order; (b) the zero- and second-order; (c) the first- and second-order reactions are to have the same half-life?
What mass of solid sodium fluoride (molar mass = 41.99 g/mol) should be added to 1.0 L of 0.23M hydrofluoric acid to make a buffer with a pH of 2.94? (Ka of HF = 1.36 x 10-3)
Calculate the pH of the solutions having the following [H+]: a) 0.57 M pH=? b) 1.84 M pH=? c) 3.7*10^-5 M pH=?
Discuss what you would observe after elution and visualization of a TLC plate having made the following mistakes in carrying out the anaylsis.
Calculate the molar mass of a Nonelectrolyte that lowers the freezing point of 25.00 g of water to -3.9 degrees C when 4.27g of the substance is dissolved in the water.
calculate the nuclear binding energy per nucleon in 6 sig figs,also in joules. 7. For 129Xe, calculate the nuclear binding energy per nucleon in 7 sig.figs also in joules per nucleon.
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