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Hydrogen sulfide is found at a concentration of 3 parts per million in air. Using the temperature and pressure conditions that are considered "standard" for air quality work, this concentration means that there are [Blank] milligrams of hydrogen sulfide in each cubic meter of air. Report your answer to the nearest 100th (0.00) of a milligram.
The reaction of copper metal with silver ions in a solution if silver nitrate is spontaneous . Calculate she standard cell potentiom to show that this is so.
For the reaction A + B C, the rate constant at 215 degrees C is 5.0 X 10^-3 and the rate constant at 452 degrees C is 1.2 X 10^-1 a) What is the activation energy in kJ/mol?
What is the empirical formula for an prganic compound whose percentage composition is 40.0% carbon
Write a balanced equation for each of the two steps of the reaction, namely: (1) the reaction between benzyltriphenylphosphonium chloride and sodium hydroxide
C6H5NH3Cl is a cation chloride salt with acid. If 37.1 g of C6H5NH3Cl are dissolved in water to prepare a 150 mL solution, which is the initial molarity of the cation?
assign absolube stereochemistry (R or S) to each of the stereocenters in (+)menthol
A certain second-order reaction (B--->products) has a rate constant of 2.00×10^-3 M^-1 s^-1 at 27 Celsius and an initial half-life of 214 s. What is the concentration of the reactant after one half-life
an adult person radiates heat to the surroundings at about the same time as a 100-watt lightbulb. what is the total amount of energy in kcal radiated to the surroundings by an adult in 24 hrs?
The initial mass of the the crude ether was 141 mg. The mass after recrystallization was 121 mg. Calculate the percent recovery from recrystallization.
Organic chemistry mechanism and conceptual problems involving, Write equations to show how nitronium ions might be formed using a mixture of nitric and sulfuric acids.
Study the structures of the chlorophylls and carotenoids and predict the relative polarity of each set of pigments below
Calculate the number of moles of solute present in eahc other following solutions: a) 60.0g of an aqueous solution that is 1.25 percent KI by mass, b) 250g of an aqueous solution that is 0.460 percent NaCl by mass, c) 0.600L of 1.25M H2SO4.
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