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The estimated average concentration of NO2 in air in the United States in 2006 was 0.016 ppm.
(a) Calculate the partial pressure of the NO2 in a sample of this air when the atmospheric pressure is 755 torr (99.1 kPa).
(b) How many molecules of NO2 are present under these conditions at 20 °C in a room that measures 15 X 14 X 8 ft?
At what pH must solutions of nickel (II) ions be maintained in order to prevent precipitation of the hydroxide
How much heat in joules is required to heat a 46 {rm g} sample of aluminum from 80 F to 146 F?
Given a column of air with a pressure of 1.57 x 10^5 Pa and an area of 1.04 m^2 and given that the acceleration due to gravity is 9.8 m/s^2, what is the mass of this column
While 1,2- dibromodecane is treated with potassium hydroxide a strong base, it yields a mixture of three isomeric compounds A-C of molecular formula C10H19Br.
oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9 sulfur trioxide.nbspa.
On a long standing, an open bottle of aspirin will develop an odor of vinegar. What causes this to happen?
Determine the total number of atoms in this chemical formula and calculate the molar mass of the solute and how many moles of solute are in the solution?
Estimate the heat of formation of water dHf(H2O)(g) from its elements, provided the following bond energies. Write the equation.
how long would it take to count 1 billion tinyinvisible objects from a bottle of these objectsif you couldnt see one
Question- CCl2F2 is considered to be environmentally safe and is used as a refrigerant. The heat of vaporization of CCl2F2 is 289 J/g.
The inital concentration of HBr in a reaction vessel is 1.2 x 10 ^-3 mol/L. If the vessel is heated to 500 K, WHat is the percent decomposition of HBr and the equilbirum compositions of the mixtures?
Propanoic Acid, HC3H5O2, is a weak acid. A 0.125 M solution of propanoic acid, HC3H5O2, dissociates 1.020%. Using this information, calculate the pH of the 0.125 M solution of propanoic acid.
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