Effects of higher MPG in US petroleum consumption
Petroleum consumption in the US in 1990 supplied about 33.7E15 kJ of energy. Of this quantity, about 15.9E15 kJ was supplied by foreign sources. The transportation sector is the major user of petroleum, accounting for 23.2E15 kJ of consumption. Overall automobile fuel economy in the US was about 21 miles per gallon in 1990. ...continues
Iron concentration given pH and pE values
At pH 6.00 and pE 2.90, what is the concentration of Fe2+ (mol/L) in equilibrium with Fe(OH)3?
I would like some information as to the pros and cons of radioactive waste. I would like more info on the pros of using nuclear energy to meet our high-energy demands even though there is readioactive waste. How we dispose of it and the safety of the way we dispose of it.
pH and pE are given, need concentration of Fe2+
At pH 6.00 and pE 2.70, what is the concentration of Fe2+ (mol/L) in equilibrium with Fe(OH)3?
given temp, Eh(??) and pH, find disolved amt of Oxygen (ppm)
A ground water sample , at 25 C, has Eh= 0.6 and pH=6.40. Assuming the system is at equilibrium, calculate the amount of dissolved oxygen (ppm) in the groundwater sample.
pH is given, need calcium carbonate dissolved per liter
The average pH of precipitation in rural areas is 5.50. Assuming that the pH is controlled by the carbonate system, i.e., no anthropogenic acid gases are present in the atmosphere, calculate the amount of calcium carbonate (mg) dissolved per liter of rainwater. pKa1=6.33, KCO2=3.388e-02 Hint: PCO2=3.16E-4, I'm confused!
How much Less petroleum in kj needed? Dealing with mpg and kj consumption
How much Less petroleum in kj needed? Dealing with mpg and kj consumption -------------------------------------------------------------------------------- Petroleum consumption in the US in 1990 supplied about 34.6E15 kJ of energy. Of this quantity, about 14.3E15 kJ was supplied by foreign sources. The transportation se ...continues
grams of gasoline to raise CO by 1000 ppm at STP??
Assume that an incorrectly adjusted lawn mower is operated in a garage such that the combustion reaction in the engine is: C8H18 + (17/2)O2 -> 8CO + 9H2O If the dimensions of the garage are 3.0 by 5.0 by 5.0 meters, how many grams of gasoline must be burned to raise the level of CO in the air to 1000 ppm by volume at STP? H ...continues
Nernst applic: atm pressure? given pH, Fe3+=Fe2+?
What is the calculated value of the partial pressure(atm) of O2 in acid mine water of pH 1.700, in which [Fe3+] = [Fe2+]? It seemed simple enough...I looked at other examples but couldn't find one on lead having equal concentrations.
mass of carbon needed to increase average CO2 by 170 ppm
Taking the mass of the atmosphere to be 4.3E15 metric tons, what mass of carbon must be burned in order to increase the average carbon dioxide level in the atmosphere by 170ppm by volume (in metric tons)? I only have one try left on the computer!!! I downloaded a couple of study guide examples but the were wrong. Please h ...continues
