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Lake Lianna is fed by two rivers, the Matthew and the Andrew. You have made careful water chemistry measurements throughout the year and found that the two rivers have the following pH and alkalinity:
Matthew River: pH = 8.2; alkalinity = 10-3 equivalents/literAndrew River: pH = 5.7; alkalinity = 10-5 equivalents/liter.
Your studies of river fluxes show that Lake Lianna is formed by mixing 2 parts of the Matthew with 3 of the Andrew. Calculate its pH, assuming that Lake Lianna is equilibrated with the atmosphere. Your measured pH value for Lake Lianna is 7.6. Why might this differ from the value you calculate based on mixing of the two sources?
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Limeway Company issues $5,000,000, 6%, 5-year bonds dated January 1, 2007 on January 1, 2007. The bonds pay interest semiannually on June 30 and December 31. The bonds are issued to yield 5%. What are the proceeds from the bond issue?
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