Dissolved oxygen question w/hint

A ground water sample , at 25 degrees C, has Eh= 1.0 and pH=6.80. Assuming the system is at equilibrium, calculate the amount of dissolved oxygen (ppm) in the groundwater sample Hint: [O2-aq]/[O2-g]=0.0012589

General Chemistry / Environmental chem question

44) How many metric tonnes of 5%-S coal would be required to yield the H2SO4 needed to produce a 2.0-cm rainfall of pH 2.00 over an area of 100 square kilometers? HINT: Hint: Calculate vol rain, mol H+, mass of S, mass of coal

Nernst equation problem.

71) What is the redox potential of an acid mine water sample which has Fe3+ = 7 x E-03 M and Fe2+ = 4 x E-04 M given that E0 for the Fe3+/Fe2+ couple is 0.77v. Hint: Use Nernst equation

Acid rain question

How many metric tons of 5%-S coal would be needed to yield the H2SO4 required to produce a 2.0-cm rainfall of pH 2.00 over an area of 100 square kilometers? Hint: Calculate vol rain, mol H+, mass of S, mass of coal

Photosynthesis related question

a) Photosynthesis is estimated to produce 340.0 g (dry weight) of plant matter per square meter, 50% of which is carbon. Calculate the total number of grams of carbon "fixed" each year by 1000 square meters. b) The photosynthetic reaction can be represented as: 6CO2 + 6H2O -> C6H12O6 + 6O2 Of the glucose produced, 40.0% is used by the plant to fuel respiration; the rest is converted to plant matter. Calculate the total moles of glucose produced annually in our reference 1000 square meter area. c) Each mole of glucose produced represents the absorption of 2803 kJ of solar energy. If the average energy available from the sunlight over an eight-month period is 1.0 kJ/cm2 per day, what p... click for more