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A car has an efficiency of 15 miles per gallon of gasoline where molecular formula of the gasoline is c8H18 and the heat released during combustion of the gasoline is -249.9KJ/mole. weight of one gallon of gasoline is 2.66kg. In order to get more mileage a man hooks up an electrolysis cell to the engine . The reaction in the cell is H2o--------H2 +o2. How much further will the car travel with electrolysis cell runningAssume the car travels for 1 hour at 15 miles per hour.Also an alternator provides 3 amps for 1 hour to electrolysis cell.Hint( you will need to write combustion reaction for gasoline and will also need to check up enthalpy values from table
What volume of 0.50 M HNO2 and 0.50 M NaNO2 must be mixed to prepare 1.00 L of a buffered solution at a pH of 3.50? Present answer in mL units and use 4 significant figures.
In the hydrogen atom, for which transition is the emission line observed at shorter wavelength, n=4 to n=2 or n=5 to n=1? Show the equation needed to figure this out. Consider the relative size of delta E to determine the relative wavelength.
A sample of pure calcium fluoride with a mass of 15.0 g contains 7.70 g of calcium. How much calcium is contained in 45.0 g of calcium fluoride
How many grams of solute are needed to make each of the following solutions?296.5 mL of 0.333 M barium acetate
how would you make a 50.0 mm mops buffer pka7.15 at ph7.00 using a 500 mm sol of mops acid and a 1.00 m sol of naoh?
Phenol red indicator changes from yellow to red in the pH range 6.6 to 8.0. State what color the indicator will assume at the equivalence point for the titration of NHc with HCL
A 6.50 x 10^-5 M solution of potassium permanganate has a percent transmittance of 27.3% when measured in a 1.15-cm cell at a wavelength of 525 nm.
Ag electrode in 1.0 M Ag + (aq) and Cu electrode in 1.0 M Cu 2+ (aq). What is the cell potential when the solutions are altered, so [Ag+] = 1.25 M and [Cu 2+] =0.25 M
KCN is dissolved in water in a calorimeter that has a total heat capacity of 3.850 kJ·K-1, the temperature decreases by 0.280 K. Calculate the molar heat of solution of KCN.
A dioxin-contaminated water source contains 0.081% dioxin by mass. How much dioxin is present in 4.2 L of this water (Assume that the density of the solution is 1.01 g/mL.)
How long will it take to deposit 89 g of magnesium from an electrolysis cell containing MgO at a current of 12.5. A magnesium formation is the only cathode reaction mg = 24glmol.
what common laboratory test of viscoelasticity does this test most closely correspond? Estimate the average life of the same tubing in the same rupture test at 30 deg C and 37 deg C
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