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A voltaic cell is constructed by immersing a strip of silver in a 1.0M AgNO3 solution and a strip of cadmiun metal in a 1.0M Cd(NO3)2 solution. The circuit is completed by a wire and a salt bridge in the usual way. What is the cell potential for the voltaic cell described above?
calculate the mass, in grams, at 25 degrees celcius of 30.0mL of propylene glycol, which has a density of 1.036g/mL
A 80.0 mL volume of 0.25 M HBr is titrated with 0.50 M KOH. Calculate the pH after addition of 40.0 mL of KOH.
compressed reversibly and adiabatically until the temperature reaches 250K. Given that its molar constant-volume heat capacity is 27.5J/Kmol, calculate final pressure and final volume.
a 150.0 g sample of metal at 80 c is added to 1500.0g of H2O at 20 c. the temperature rises to 23.3 c. assuming that the calorimeter is a perfect insulator, what is the specific heat of the metal.
4 Fe(s) + 3 O2(g) → 2 Fe2O3(s). If 12.5 g of iron(III) oxide (rust) are produced from 8.74 g of iron, how much oxygen gas is needed for this reaction?
What is the melting range of a mixture of both trans-Cinnamic and urea?
A gaseous mixture of O2 and N2 contains 30.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 805 mmHg ?
Consider the following gas-phase equalibrium reaction: N2(g)+O2(g) 2NO(g); Kc=4.10x10^-4 at 2000 degrees C. If 6.0 mol of NO is introduced into a 1.0L container at 2000 degrees C, what is the concentration og NO when equalibrium is reached?
Find the heat of combustion in kJ/g for each gas. These values are valid at 25°C, where the water produced by the reaction is in the liquid state.
an unknown gas has a density of 1.60 g/L at 1.00 atm and 30.5 degrees celsius what is the molar mass of the gas.
A sample of an unknown gas effuses in 12.4 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.59 min.
assuming the volume of the stomach is 1.0L, what will the pH change of the stomach acid resulting from the ingestion of one regular strength strength maalox tablet?
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