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Water treatment plants commonly use chlorination to destroy bacteria. a byproduct is chloroform- CHCl3, a suspected carcinogen. This is produced when HOCl, formed by reaction of Cl2 and water, reacts with dissolved organic matter. There is a limit of 100 ppb for CHCl3 in drinking water. Convert this concentration to mass percent.
The mixture is ignited with a spark and it reacts to form H2O (l)liquid water. determine the temperature of water?
A current of 3.87 A is passed through a Cr(NO3)2 solution for 1.10 hours. How much chromium is plated out of the solution? in (g)
To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. A chemical engineer places a mixture of noble gases consisting
The Keq for imidazole binding to hemoglobin can be determined from the following linear equation: 1/?A100Keq * 1/[lm +1/?A100=(1/?A) a. For the plot of the reciprocal of the change in absorbance versus the reciprocal of the imidazole concentration..
?Hf0 for the formation of rust (Fe2O3) is -826 kJ/mol. How much energy is involved in the formation of 5 grams of rust.
a solution of i2 was standardized with ascorbic acid. using a 0.100 g sample of pure ascorbic acid 25.32 ml of i2 were
Write the net ionic equation to show the formation of a precipitate (insoluble salt) when the following solutions are mixed. Write noreaction if no insoluble salt forms CaCl2(aq)+Mg3(PO4)2(aq)
What is the total pressure, in mm Hg, of a gas mixture containing argon gas at 0.25 atm, helium gas at 350 mm Hg, and nitrogen gas at 360 torr
carbon dioxide which is recognized as the major contributor to global warming as a greenhouse gas is formed when fossil fueels are combusted, as in electrical power plants fueled by coal, oil, or natural has.
The hydrogen gas generated is collected over water at 25.0°C. The volume of the gas is 535 mL measured at 1.00 atm. Calculate the number of grams of sodium used in the reaction. (Vapor pressure of water at 25°C = 0.0313 atm.)
Exactly 150mL of 0.13M HNO2 is titrated with 100mL of 0.13 M NaOH. What is the pH at the endpoint.
What does a yellow flame in the Bunsen burner indicate? How can this be corrected? Why use a funnel to transfer large volume of liquid from one container to another?
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