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When natural gas (mainly CH4) is burned with 10 percent excess air, in addition to the main gaseous products of CO2 and H2O, other gaseous products result in minor quantities. The Environmental Protection Agency (EPA) lists the following data:
Emission Factors (kg/106m3 at SC)SO2 NO2 CO CO2Large Utility boiler, uncontrolled 9.6 3040 1344 1.9x106Large Utility boiler, controlled gas recirculation 9.6 1600 1344 1.9x106Residential furnance 9.6 1500 640 1.9x106
The data are based on 106m3 measured at SC of methane burned. What is the approximate mole fraction of SO2, NO2, and CO (on a dry basis) for each class of combustion equipment?
The blank solution used to calibrate the spectrophotometer is 10.0mL of 0.2M Fe(NO3)3 diluted to 25.0mL with 0.1M HNO3. Why is this solution preferred to simply using de-ionized water for the calibration?
Which of the following molecules or ions will have a lewis structure most like that of phosphorous trichlorid,
Write the structural formula and other name of a) 2-bromo-3,3-dimethylhexane b) 3,3-dimethyl-1-heptyne
argon expands from 25.0 L to 35.0 L at a constant temperature of 350 K. Calculate delta G for the expansion.
A mixture of KBr and NaBr weighing 0.560 gm was treated with aqueous Ag+ and all the bromide ion was recovered as 0.970 gm of pure AgBr. What was the fraction by weight of Kbr in the original sample?
The mass density of the resulting solution was 1040 kg/m^3. Calculate themolarity and molarity of sucrose in the solution.
Imagine that you are trying to design a new battery using the elements tin (Sn) and a halogen (Cl2, Br2, or I2) and you are using the reactions when SnCl2 and KBr are combined.
If 4.800* 10^-5 mol of uranium-238 will effuse through a hole in 125 seconds, how many mol of uranium-235 will effuse through the same hole in the same amount of time
Suppose that you wished to prepare copper(II) carbonate by a precipitation reaction involving Cu2+ and CO32-. Select all of the pairs of reactants that could be used as solutes
Calculate the molality, molarity, and mole fraction of FeCl3 in a 23.6 mass % aqueous solution (d = 1.222 g/mL).
An unknown consisting of a single sugar gives a negative fermentation test. Which one of the following tests would allow you to decide which of the five sugars used in this experiment you had?
BH+ClO4- is a salt formed from the base B (Kb = 1.00 × 10?4) and perchloric acid. It dissociates into BH+, a weak acid, and ClO4- , which is neither an acid nor a base. Find the pH of 0.100 M BH+ClO4-.
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