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write two equations that show thw two-stage ionization of sulfurous acis in water.(H2SO3)
which stage of ionization is likely favored?
Given that a sample of air is made up of nitrogen, oxygen and argon in the mole fractions 78% N2, 21% O2 and 1.0% Ar, what is the density of air at sandard temperature and pressure?
Compute the pH of a solution made by mixing 67 grams of sodium acetate, NaCH 3 COO, to 37 g of acetic acid, CH 3 COOH, and dissolving in H 2 O to form 300. mL of solution ?
What are the advantages and disadvantages of animal studies and epidemiological studies for establishing dose-response relationships?
how many moles can be produced from 2.5 moles of Ag2CO3 and final temperature of the calorimeter contents is 23.83°C After dissolution of the salt.
Butadiene, C4H6(used to make synthetic rubber and latex paints) dimerizes to C8H12 with a rate law of rate=0.038L/(mol*s)[C4H6]^2. What will be the concentration of C4H6 after 2.0 hours if the initial concentration is 0.044M?
If 16.0 mL of .150 M HCL is needed to neutralize all the NH3 from a 2.25-g sample of organic material, calculate the mass percentage of nitrogen in the sample.
When 1 mol of H2O and 1 mol of CO are placed in an empty 1L reaction vessel at 959K, the equilibrium mixture containes 0.422 mol of water vapor. Find Kc at 959K if the equation is: H2O(g) + CO(g) H2(g) + CO2(g)
What are the products from the combustion of 2-methyl-3-ethyloctane?
A 72.0 mL volume of 0.25 Moles HBr is titrated with 0.50 Moles KOH. Calculate the pH after addition of 36.0 mL of KOH
The highly reactive OH radical (a species with an unpaired electron) is believed to be involved in some atmospheric processes. The bond enthalpy for the oxygen-to-hydrogen bond in OH as 460 kJ/mol. What is the longest wavelength (in nm) of radiati..
What is the percent yield of a reaction in which 238 g phosphorus trichloride reacts with excess water to form 143 g HCl and aqueous phosphorus acid (H3PO3)?
A 270- mL flask contains pure helium at a pressure of 749 torr. A second flask with a volume of 470 mL contains pure argon at a pressure of 730 torr what is the partial pressure of He?
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