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In what form does mercury exist when it is produced during the combustion of coal? What are some of the ways in which mercury may be removed during the combustion process?
an adult drank 2 glasses of cold water 3 c in one day. the volume of each glass was 250ml. how much heat in kj did the
The activity of an enzyme is close to zero at pH = 10 and above and high at pH = 6 and below. The activity of this protein probably depends upon the presence of an amino acid with R-group
If the reaction N2(g) + 3H2(g) ! 2NH3(g) is carried out at constant temperature and pressure, how much H2 is required to react with 6.4 L liters of N2.
Determine the minimum excitation energy of an electron constrained to rotate in a circle of radius equal to the Bohr radius (the value of Bohr predicts for the electron-hydrogen distance in the n=1 state) around a fixed point.
How many grams of ice would be melted by the energy obtained as 23.6 g of water vapor is condensed at 100 degrees celcius and cooled to liquid at 0 degrees celcius
If we changed our speed limit signs to metric, what would probably replace 60 mi/h? Is the following statement reasonable? (Justify your answer.) It took 300 L of gasoline to fill up the car's tank.
Calculate the OH- concentration of a solution that has [H3O+] of 3.5 x 10 -10M. Is the solution acidic, base, or neutral? report answer in two decimal places.
Problem- a) Calculate the surface area in nm^2 of a water solution contained in a petri dish with a diameter of 9.0cm. The area of a circle is calculated as A=pie r^2
How would the results differ if you added sodium p-toluate instead of p-toluic acid to the two-layer mixture of tert-butyl methyl ether and water
A 4.00-g sample of a mixture of CaO and BaO is placed in a 1.00-L vessel containing CO2 gas at a pressure of 730 torr and a temperature of 25 °C. The CO2 reacts with the CaO and BaO, forming CaCO3 and BaCO3.When the reaction is complete, the press..
If 1.50g (NH4)2SO4 is dissolved in enough water to form 250 ml of solution, what is the molarity of the solution.
Explain how long will the system produce 15.00 amperes of current and what is the Grxn for this reaction if the resistance is 0.08750 ohms. The Faraday constant is 96485.3C/mole of electrons; V=I*R, the reduction reaction of O2 is O2 + 4H+ + 4e-->..
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