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Sewage and industrial pollutants dumped into a body of water can reduce the dissolved oxygen concentration and adversely affect aquatic species. In one study, weekly readings are taken from the same l...
See AnswerQ: The ascorbic acid concentration in mmol/L of five different brands
The ascorbic acid concentration in mmol/L of five different brands of orange juice was measured. Six replicate samples of each brand were analyzed. The following partial ANOVA table was obtained. a....
See AnswerQ: A 0.2121-g sample of an organic compound was
A 0.2121-g sample of an organic compound was burned in a stream of oxygen, and the CO2 produced was collected in a solution of barium hydroxide. Calculate the percentage of carbon in the sample if 0.6...
See AnswerQ: Describe in your own words why the confidence interval for the mean
Describe in your own words why the confidence interval for the mean of five measurements is smaller than that for a single result.
See AnswerQ: Calculate the pH of the solution that results when 20.0
Calculate the pH of the solution that results when 20.0 mL of 0.2500 M NH3 is a.Mixed with 20.0 ml of distilled water. b.Mixed with 20.0 ml of 0.250 M hcl solution. c.Mixed with 20.0 ml of 0.300 M hcl...
See AnswerQ: The solubility-product constant for Ce(IO3)3 is
The solubility-product constant for Ce(IO3)3 is 3.2 × 10-10. What is the Ce3+ concentration in a solution prepared by mixing 50.00 mL of 0.0500 M Ce3+with 50.00 mL of a. Water? b. 0.0500 M IO3-? c. 0....
See AnswerQ: A solution is 0.0500 M in NH4Cl and 0.
A solution is 0.0500 M in NH4Cl and 0.0300 M in NH3. Calculate its OH-concentration and its pH a.Neglecting activities. b.Taking activities into account.
See AnswerQ: What is the pH of a solution that is a.
What is the pH of a solution that is a. Prepared by dissolving 6.75 g of lactic acid (90.08 g/mol) and 5.19 g of sodium lactate (112.06 g/mol) in water and diluting to 1.00 L? b. 0.0430 M in acetic ac...
See AnswerQ: What is the pH of a solution that is a.
What is the pH of a solution that is a. Prepared by dissolving 3.30 g of 1NH422SO4 in water, adding 125.0 ml of 0.1011 M naoh, and diluting to 500.0 ml? b. 0.120 M in piperidine and 0.010 M in its chl...
See AnswerQ: Calculate the change in pH that occurs in each of the following
Calculate the change in pH that occurs in each of the following solutions as a result of a tenfold dilution with water. Round calculated values for pH to three figures to the right of the decimal poin...
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