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The presence of SO2 in the atmosphere and the sulfuric acid that it produces result in the phenomenon of acid rain. Uncontaminated rainwater is naturally acidic and generally has a ph value of about 5.6. The ph of acid rain is about 4. This acidity has affected many lakes in northern Europe, the northern United States, and Canada, reducing fish populations and affecting other parts of the ecological network within the lakes and surrounding forests. The ph of most natural waters containing living organisms is between 6.5 and 8.5, but freshwater ph values are far below 6.5 in many parts of the continental United States. At ph levels below 4.0, all vertebrates, most invertebrates, and many microorganisms are destroyed. More than 300 lakes in New York State contain no fish, and 140 lakes in Ontario, Canada, are devoid of life. The acid rain that appears to have killed the organisms in these lakes originates hundreds of kilometers upwind in the Ohio Valley and Great Lakes regions. Some of these regions are recovering as sulfur emissions from fossil fuel combustion decrease, in part because of the U.S. Clean Air Act of 1990, which required that power plants reduce their sulfur emissions by 80%. If the ph of a 1.00-in. rainfall over 1400miles2 is 3.80, how many kilograms of sulfuric acid, H2SO4 , are present, assuming that it is the only acid contributing to the ph? For Ka1, sulfuric acid, is very large and Ka2 is 0.012.
A buffer having equal amounts of a weak acid and its conjugate base has a pH =4.4. A small amount of sodium hydroxide was combined to this buffer solution .
You prepare a buffer solution by dissolving 1.77 g each of benzoic acid, HC7H5O2, and sodium benzoate, NaC7H5O2, in 900.0 mL of water.The pH of the buffer is 4.19. How much (in grams) of the buffer (benzoic acid), would you add to the 900.0 mL of ..
2KClO3 + heat > 2KCl + 3O2, How many moles of O2 form as 3.0 mol of KClO3 are totally consumed.
A bicycle tire is filled with air to a pressure of 75 psi at a temperature of 19 degrees celcius. Riding the bike on asphalt on a hot day increases the temperature of the tire
Calculate the amount of 10.00% acetic acid you will need to add to 100.0 mL of your milk in order to bring the final acidity to 1.00% acetic acid.
how many grams of iron will react with water to form iron (III)oxide and 85 liters of hydrogen gas at 19 degrees celsius & 525 torr?
A chemistry student prepares acetone by decomposing 12.3 g of calcium acetate. If the student collected 2.50 g of acetone and the theoretical yield is 3.42 g.
If the final solution has a bromide ion concentration of 1.26 M, what was the concentration of the SrBr2 solution? (the volumes are additive) I dont understand how to write the reaction
lots of space between gas particles B. little to no space between gas particles C. nothing about the space between gas particles can be inferred.
Use the Frost Circle to draw the energy levels of the Pi molecular orbitals for this ion, show the electronic configuration and explain why the ion is aromatic.
.134 mol of KCl and .257 mol of CaCl2 were dissolved in water. calculate the total number of moles of Cl- ions in the solution
Calculate what will be the amount of heat, q, absorbed by the calorimeter apparatus also express your answer in kJ? (heat capacity = 2.677 x 103 J/K)
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