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Bacterial digestion is an economical method of sewage treatment.
5CO2(g) + 55NH4+(aq) + 76O2(g) right arrow BacteriaC5H7O2N(s) + 54NO2-(aq) + 52H2O(l) + 109H+(aq)bacterial tissue
The above reaction is an intermediate step in the conversion of the nitrogen in organic compounds into nitrate ions.
a. How much bacterial tissue is produced in a treatment plant for every 1.0 multiplied by 104 kg of wastewater containing 3.0% NH4+ ions by mass?
b. Assume that 96% of the ammonium ions are consumed by the bacteria.
What is the concentration of the vinegar in weight percent? (Assume a density of 1.030 g/mL.) If the pH of the vinegar was 3.44, what value is obtained for the Ka of acetic acid?
Calculate the molarity, Molarity of iron (III) chloride solution
what is the concentration of chromium ion present in a 0.07092 M solution of potassium hydroxide in contact with a large excess of a precipitate
How are conditions of pressure and temperature, at which two phases coexist in equilibrium, shown on a phase diagram? By a line separating the phases by the endpoints of the line segment separating the phases
A chemist prepares a sample of hydrogen bromide and finds that it occupies 252 mL at 70C and 464 Torr. What volume would it occupy at 0C at the same pressure.
The concentration of potassium ions inside a nerve cell is around 20 to 30 times that outside the cell. Calculate the potential difference between inside
How many joules of heat are required to heat 143 g of aluminum from 55.0 oC to 66.5oC?
compare the number of valence electrons in an atom of oxygen, O , with the number of valence electrons in an atom of selenium in the same period or group.
Light with a wavelength of 330nm shines on a piece of metal with a threshold energy of 4.60 eV. What would you expect for the kinetic energy
The overall reaction order for an elementary reaction always equals its molecularity however the overall reaction rate for multistep reaction can only be determined based on experimental data
A 10.0 balloon contains gas at a pressure of 640 torr. What is the new pressure of the gas at the 22.0 liters volumes if there is no change in temperature.
P4(s) + F2(g)-> PF3(g) What mass of F2 is needed to produce 187 g of PF3 if the reaction has a 80.1% yield?
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