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The standard cell potential (E°) of a voltaic cell constructed using the cell reaction below is 0.76 V: Zn (s) + 2H+ (aq) ? Zn2+ (aq) + H2 (g) With PH2 = 1.0 atm and [Zn2+] = 1.0 M, the cell potential is 0.42 V. The concentration of H+ in the cathode compartment is __________ M. 1.8 × 106 5.5 × 105 3.3 × 10-12 1.1 × 10-10 1.3 × 10-3
How much time (in minutes) will it take for the water heater to heat the 5.5 Liters of water from 23 Celsius to 49 Celsius?
If a bottle of nail polish remover contains 181 mL of acetone, how much heat would be released by its complete combustion? The density of acetone is 0.788 g/mL.
how might you be able to build a buffer solution of a given molarity at any pH without doing a single Henderson- Hasselbalch calculation?
The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.253 g sample of NH4Cl is added to 65.0 mL of water in a calorimeter at 26.9°C.
How would the results differ if you added sodium p-toluate instead of p-toluic acid to the two-layer mixture of tert-butyl methyl ether and water
In each of the following pairs of hydrocarbons, which one would you expect to have higher boiling points? And Why?
The activation energy of a certain reaction is 76.4 kJ/mol. How many times faster will the reaction occur at 42C than at 0C
Calculate the work done by the gas if it expands against a constant pressure of 5 atm. -Answer is -1.14x10^4 J but just need to know how to get there.
Polar solute, polar solvent. Nonpolar solute, Nonpolar solvent. Or Nonpolar solute, Polar solvent
C3H8(g) + 5 O2(g) ? 3 CO2(g) + 4 H2O(g) Calculate the overall enthalpy change for this reaction using standard bond enthalpies.
Is a 0.15M solution of potassium benzoate C6H5COO-K+ acidic, basic, or neutral? Calculate the pH. The Kb for benzoic acid is 1.5 X 10^-10.
suppose 1.5 mol of methane is allowed to react with 4 mol of oxygen. what is the limiting reagnant?
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